{"id":81574,"date":"2023-03-03T02:32:38","date_gmt":"2023-03-03T10:32:38","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=81574"},"modified":"2025-03-28T20:01:09","modified_gmt":"2025-03-29T03:01:09","slug":"bad-coolant-level-sensor-symptoms","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/","title":{"rendered":"Bad Coolant Level Sensor Symptoms"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column81574_460f24-39 > .kt-inside-inner-col,.kadence-column81574_460f24-39 > .kt-inside-inner-col:before{border-top-left-radius:0px;border-top-right-radius:0px;border-bottom-right-radius:0px;border-bottom-left-radius:0px;}.kadence-column81574_460f24-39 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column81574_460f24-39 > .kt-inside-inner-col{flex-direction:column;}.kadence-column81574_460f24-39 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column81574_460f24-39 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column81574_460f24-39{position:relative;}@media all and (max-width: 1024px){.kadence-column81574_460f24-39 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column81574_460f24-39 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column kadence-column81574_460f24-39 inner-column-1 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-5912c6  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-7a32e2\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading81574_2beef2-56, .wp-block-kadence-advancedheading.kt-adv-heading81574_2beef2-56[data-kb-block=\"kb-adv-heading81574_2beef2-56\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading81574_2beef2-56 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading81574_2beef2-56[data-kb-block=\"kb-adv-heading81574_2beef2-56\"] mark.kt-highlight{font-family:Inter;font-weight:500;font-style:normal;color:#f76a0c;-webkit-box-decoration-break:clone;box-decoration-break:clone;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}.wp-block-kadence-advancedheading.kt-adv-heading81574_2beef2-56 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading81574_2beef2-56[data-kb-block=\"kb-adv-heading81574_2beef2-56\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading81574_2beef2-56 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading81574_2beef2-56\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Coolant level sensors report low radiator coolant.<\/li>\n\n\n\n<li>Symptoms of a bad coolant level sensor include an illuminated check engine light, an untriggered coolant level sensor, and an overheating engine.<\/li>\n\n\n\n<li>The cost of replacing the coolant level sensor ranges from $10 to $235.<\/li>\n<\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<h2 class=\"wp-block-heading\">What Is the Coolant Level Sensor?<\/h2>\n\n\n\n<p>The coolant level sensor , also called the coolant level indicator, reports low radiator coolant, which is an important piece of information for the person driving the vehicle. Coolant level sensors vary in design and operation, but they all have the same job to do.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"556\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/04\/coolant-level-sensors-1024x556.jpg\" alt=\"images of different coolant level sensors\" class=\"wp-image-82474\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/04\/coolant-level-sensors-1024x556.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/04\/coolant-level-sensors-300x163.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/04\/coolant-level-sensors-768x417.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/04\/coolant-level-sensors-150x81.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/04\/coolant-level-sensors.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">Coolant level sensors | Image Source: Richard McCuistian<\/figcaption><\/figure>\n\n\n\n<p>Coolant level sensors are either in the plastic coolant reservoir\/surge tank or are in the radiator itself. Some GM coolant level sensors beginning in the 1990s don&rsquo;t contain a switch but have a single gold plated stud supplied with a reference voltage and can detect coolant concentration as well as coolant level.<\/p>\n\n\n\n<p>Other GM cars might have a sensor with a plastic float that has metal contacts on the bottom side to close a circuit when the coolant level gets low. Usually, the signal is sent to a module or the BCM and a request is sent to the instrument cluster to turn on the low coolant light or display the message.<br>The coolant level sensor is generatlly made to last the life of the vehicle, but they sometimes fail. It can also get damaged during an accident. While a bad sensor won&rsquo;t cause major issues, it can&rsquo;t warn you about the engine potentially running low on coolant fluid. Therefore, you should replace it as soon as possible.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Bad Coolant Level Sensor Symptoms<\/h2>\n\n\n\n<p>Ignoring a problematic coolant level sensor might lead to more serious engine issues that will cost more to repair. To save both time and money, replace a bad sensor as early as possible.<\/p>\n\n\n\n<p>Keep an eye out for the following warning signs:<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/p2181-code-cooling-system-performance\/\" target=\"_self\" rel=\"dofollow\" class=\"ucf5b2eed88eff59042072172aca1e926\"><style> .ucf5b2eed88eff59042072172aca1e926 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .ucf5b2eed88eff59042072172aca1e926:active, .ucf5b2eed88eff59042072172aca1e926:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .ucf5b2eed88eff59042072172aca1e926 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .ucf5b2eed88eff59042072172aca1e926 .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .ucf5b2eed88eff59042072172aca1e926 .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .ucf5b2eed88eff59042072172aca1e926:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">P2181 Code: Cooling System Performance<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Warning light stays on<\/h3>\n\n\n\n<p>Some vehicles will have a <a href=\"https:\/\/www.carparts.com\/blog\/coolant-temperature-warning-light-meaning-causes-what-to-do\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant light\">coolant light<\/a> on their dashboard. This light will illuminate when the coolant level sensor detects a dangerously low coolant level. In other vehicles that don&rsquo;t have a dedicated coolant light, the sensor will <a href=\"https:\/\/www.carparts.com\/blog\/check-engine-light-flashing\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"turn on the check engine light\">turn on the check engine light<\/a> to warn you about the low coolant level.<\/p>\n\n\n\n<p>A faulty coolant level sensor can trigger the warning light and keep it on, even if the engine has enough coolant fluid. You might refill the coolant reservoir prematurely, leading it to overflow. If you ignore the perpetually lit coolant light, you might not notice when your vehicle is low on fluid. A constantly running warning light might also overheat and burn itself out if it runs for too long.<\/p>\n\n\n\n<div id=\"article-search-widget\">\n<div class=\"cp-search\">\n<div align=\"center\">\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/w_auto,dpr_auto\/carparts\/logos\/badge_wordmark\/full_color\/CP_LOGO_COLOUR_RGB\" alt=\"CarParts.com\" width=\"300\" height=\"56\">\n<\/div>\n<form id=\"cpsearchform\" name=\"cpsearchform\" action=\"https:\/\/www.carparts.com\/search\" method=\"get\" target=\"_blank\" accept-charset=\"character_set\" aria-label=\"search CarParts.com\">\n    <input type=\"text\" class=\"keyword\" name=\"q\" placeholder=\"Search for parts on CarParts.com\" value=\"\" aria-label=\"Search CarParts.com\"><input type=\"submit\" class=\"btn-search\" value=\"Search\" aria-label=\"Search\">\n<\/form>\n<\/div>\n<\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Low coolant level doesn&rsquo;t trigger the sensor<\/h3>\n\n\n\n<p>A fully functioning coolant level sensor will activate the warning light the moment it detects that the coolant fluid has become critically low. However, if the sensor was damaged or worn out, it might not be able to correctly measure the amount of coolant in the cooling system.<\/p>\n\n\n\n<p>A faulty coolant level sensor won&rsquo;t be able to detect low coolant levels, nor will it activate the coolant light or check engine light.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Engine overheats despite normal coolant level readings<\/h3>\n\n\n\n<p>A bad coolant level sensor won&rsquo;t directly cause the engine to overheat. However, it can prevent you from realizing that the coolant fluid has gotten depleted to the point that it can no longer keep the engine cool.<\/p>\n\n\n\n<p>Without sufficient coolant fluid, the engine will run hotter than normal. This will put greater strain on various parts, reducing their overall lifespan. Engine components like the cylinder head, gaskets, and exhaust valves can even get damaged, which can lead to severe consequences for the engine and the rest of your vehicle.<\/p>\n\n\n\n<p>Keep in mind that a bad coolant level sensor isn&rsquo;t the only possible reason behind an <a href=\"https:\/\/www.carparts.com\/blog\/what-damage-to-expect-from-an-overheating-car\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"overheating engine\">overheating engine<\/a>. If you want to fix your vehicle yourself, make sure to check other engine parts thoroughly to make sure that the sensor is that malfunctioning part.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">More About the Coolant Indicator Sensor<\/h2>\n\n\n\n<p>In most vehicles, the coolant level sensor is found in the <a href=\"https:\/\/www.carparts.com\/coolant-reservoir\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant reservoir\">coolant reservoir<\/a>, coolant overflow bottle or expansion tank, or the <a href=\"https:\/\/www.carparts.com\/radiator\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"radiator\">radiator<\/a>. Radiator-mounted sensors are often installed inside the cooling device if the vehicle was manufactured before 2010. Newer models have externally mounted sensors attached to the side of the radiator, making the sensor easier to access. If you can&rsquo;t find the coolant indicator sensor in these parts, <a href=\"https:\/\/www.carparts.com\/blog\/why-you-should-always-consult-a-repair-manual\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"consult your vehicle&rsquo;s owner&rsquo;s manual\">consult your vehicle&rsquo;s owner&rsquo;s manual<\/a>.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/p0507-code-idle-control-system-rpm-higher-than-expected\/\" target=\"_self\" rel=\"dofollow\" class=\"u412faa9db2f9dfe5b640ecdb61f54d66\"><style> .u412faa9db2f9dfe5b640ecdb61f54d66 { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u412faa9db2f9dfe5b640ecdb61f54d66:active, .u412faa9db2f9dfe5b640ecdb61f54d66:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u412faa9db2f9dfe5b640ecdb61f54d66 { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u412faa9db2f9dfe5b640ecdb61f54d66 .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u412faa9db2f9dfe5b640ecdb61f54d66 .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u412faa9db2f9dfe5b640ecdb61f54d66:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">P0507 Code: Idle Control System RPM Higher than Expected<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<p>The coolant level sensor shouldn&rsquo;t be mistaken for the <a href=\"https:\/\/www.carparts.com\/blog\/engine-coolant-temperature-sensor-purpose-location-and-failure-signs\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant temperature sensor\">coolant temperature sensor<\/a>. This sensor measures coolant temperature, not the amount of fluid that can cool the engine. However, both sensors contribute critical information about the engine&rsquo;s current operating temperature.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"767\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-1024x767.jpg\" alt=\"close up shot of a coolant level sensor\" class=\"wp-image-81594\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-1024x767.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-300x225.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-768x575.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-150x112.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor.jpg 1500w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption class=\"wp-element-caption\">The coolant level sensor shouldn&rsquo;t be mistaken for the coolant temperature sensor because the latter measures the coolant temperature, not the amount of fluid that can cool the engine.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">What Does a Coolant Level Sensor Do?<\/h2>\n\n\n\n<p>No matter its location, the coolant level indicator also measures the amount of fluid in the engine&rsquo;s cooling system. It has metal terminals that react to magnetism.<\/p>\n\n\n\n<p>The coolant level indicator doesn&rsquo;t work alone. It relies on a magnetic float inside the coolant reservoir, coolant overflow bottle, or radiator. The float rises and drops along with the coolant level.<\/p>\n\n\n\n<p>When the coolant level drops past a certain point, the coolant level sensor will transmit a warning signal to the powertrain control module (PCM). The PCM turns on the dashboard warning light to let you know that the engine&rsquo;s coolant level is dangerously low.<\/p>\n\n\n\n<p>In some vehicles, the PCM might also put your vehicle in safe mode to lessen the production of heat.<\/p>\n\n\n\n<p>If the coolant drops to a dangerously low level, the coolant level indicator will activate the appropriate warning light. If you see the coolant light or check engine light turn on, you should check the engine&rsquo;s coolant level immediately. If the coolant has reached a critically low level, you&rsquo;ll need to add new fluid.<\/p>\n\n\n\n    <div class=\"ai-summary-widget\">\n\n        <div class=\"ai-summary-grid\">\n\n            <div>\n                <div class=\"ai-avatar\">\n                    <figure>\n                        <img decoding=\"async\" src=\"https:\/\/cld.partsimg.com\/image\/upload\/q_auto,dpr_auto,f_auto\/carparts\/blog\/widgets\/ai-summary\/ai-bot\" alt=\"AI robot\">\n                    <\/figure>\n                    <span>ELI5<\/span>\n                <\/div>\n            <\/div>\n            <div>\n                <p>A coolant level sensor helps check if your car has enough coolant to keep the engine from getting too hot. It works with a floating piece inside the coolant tank that moves up and down with the fluid. If the coolant gets too low, the sensor sends a signal to your car&rsquo;s computer. This makes a warning light turn on to tell you there&rsquo;s a problem. Some cars even go into safe mode to stop the engine from overheating. If you see the coolant warning light, check the coolant level right away. If it&rsquo;s too low, you need to add more to keep your car from getting too hot.<\/p>    \n            <\/div>\n\n        <\/div>\n\n        <div class=\"ai-summary-tooltip\">   \n            <p>Not everyone is an auto repair expert. <strong>ELI5 (&ldquo;Explain Like I&rsquo;m Five&rdquo;)<\/strong> provides layperson-friendly explanations of complex automotive concepts, systems, &amp; parts, so you can fully understand their importance. Great for casual car owners and DIY beginners! Powered by AI.<\/p>\n        <\/div>\n\n    <\/div>\n\n\n\n<h2 class=\"wp-block-heading\">DIY Replacement of a Bad Coolant Level Sensor<\/h2>\n\n\n\n<p>You can replace a faulty coolant level indicator if you have the right tools and sufficient DIY auto repair knowledge. You might have to remove some engine parts to access the sensor, depending on its location.<\/p>\n\n\n\n<p>If you lack automotive know-how, bring your vehicle to a trusted service center and ask a&nbsp; professional mechanic to examine the coolant level sensor.<\/p>\n\n\n\n<div class=\"wp-block-data443-irp-shortcode irp-shortcode\"><div style=\"clear:both; margin-top:0em; margin-bottom:1em;\"><a href=\"https:\/\/www.carparts.com\/blog\/p0125-code-insufficient-coolant-temperature-for-closed-loop-fuel-control\/\" target=\"_self\" rel=\"dofollow\" class=\"u6a42652927233c193a85f37b261681af\"><style> .u6a42652927233c193a85f37b261681af { padding:0px; margin: 0; padding-top:1em!important; padding-bottom:1em!important; width:100%; display: block; font-weight:bold; background-color:#eaeaea; border:0!important; border-left:4px solid #34495E!important; text-decoration:none; } .u6a42652927233c193a85f37b261681af:active, .u6a42652927233c193a85f37b261681af:hover { opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; text-decoration:none; } .u6a42652927233c193a85f37b261681af { transition: background-color 250ms; webkit-transition: background-color 250ms; opacity: 1; transition: opacity 250ms; webkit-transition: opacity 250ms; } .u6a42652927233c193a85f37b261681af .ctaText { font-weight:bold; color:#464646; text-decoration:none; font-size: 16px; } .u6a42652927233c193a85f37b261681af .postTitle { color:#000000; text-decoration: underline!important; font-size: 16px; } .u6a42652927233c193a85f37b261681af:hover .postTitle { text-decoration: underline!important; } <\/style><div style=\"padding-left:1em; padding-right:1em;\"><span class=\"ctaText\">See also<\/span>&nbsp; <span class=\"postTitle\">P0125 Code: Insufficient Coolant Temperature for Closed Loop Fuel Control<\/span><\/div><\/a><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">How Much Does a Replacement Coolant Level Sensor Cost?<\/h2>\n\n\n\n<p>A replacement coolant level sensor can cost anywhere between $10 and $235. The price can vary based on the pump&rsquo;s brand and your vehicle&rsquo;s year, make, and model.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get a New Coolant Level Sensor for Your Vehicle<\/h2>\n\n\n\n<p>Driving around with a damaged coolant level sensor might not seem like a major problem&#19968;until you see smoke coming out of your hood because of its inaccurate readings. So when it&rsquo;s time to shop for a top-notch coolant level sensor replacement, make sure to get one from <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a>.<\/p>\n\n\n\n<p>As a leading retailer of aftermarket car parts, we make sure to offer drivers like you only the best replacement parts for your ride. All our coolant level sensors are manufactured with OE-grade materials and passed strict quality checks from the leading names in the industry. What&rsquo;s more, you can enjoy these benefits without having to break the bank because our products come with a low-price guarantee.<\/p>\n\n\n\n<p>All it takes is a few clicks to get started. Simply enter your vehicle&rsquo;s year, make, and model into our vehicle selector to narrow down the search results to all compatible coolant level sensor replacements for your ride. Place your order in a matter of a few minutes, and get it delivered straight to your doorstep in as fast as two business days.<\/p>\n\n\n\n<p>Grab the best deals on a <a href=\"https:\/\/www.carparts.com\/coolant-level-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"coolant level sensor\">coolant level sensor<\/a> today here at CarParts.com!<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\"> 5<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>What Is the Coolant Level Sensor? The coolant level sensor , also called the coolant level indicator, reports low radiator&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":81592,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[3753,52],"tags":[1251],"ppma_author":[2607,2985],"class_list":{"0":"post-81574","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-cooling-system","8":"category-diy","9":"tag-coolant-level-sensor","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Bad Coolant Level Sensor Symptoms - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"A faulty coolant level sensor can lead to other problems for your vehicle. Look out for these common symptoms.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bad Coolant Level Sensor Symptoms - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"A faulty coolant level sensor can lead to other problems for your vehicle. Look out for these common symptoms.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/\" \/>\n<meta property=\"og:site_name\" content=\"In The Garage with CarParts.com\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/carpartscom\" \/>\n<meta property=\"article:published_time\" content=\"2023-03-03T10:32:38+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-03-29T03:01:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1500\" \/>\n\t<meta property=\"og:image:height\" content=\"1000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:site\" content=\"@carpartscom\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/\"},\"author\":[{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"CarParts.com Research Team\",\"jobTitle\":\"Expert Automotive Writer\",\"description\":\"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/thecpteam\\\/\",\"sameAs\":\"https:\\\/\\\/www.facebook.com\\\/carpartscom, https:\\\/\\\/twitter.com\\\/CarPartscom, https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/, https:\\\/\\\/www.instagram.com\\\/carpartscom\\\/\"},{\"@type\":\"Person\",\"$id\":\"4\",\"name\":\"Richard McCuistian\",\"jobTitle\":\"ASE Master Automobile Technician\",\"description\":\"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.\",\"knowsAbout\":\"Auto Repair, Car Maintenance, Auto Parts, Car Reviews\",\"publishingPrinciples\":\"\\\/blog\\\/our-team\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/author\\\/richardmccuistian\\\/\",\"sameAs\":\"https:\\\/\\\/www.linkedin.com\\\/in\\\/richard-mccuistian-2681891b\\\/, https:\\\/\\\/www.youtube.com\\\/user\\\/McCuistian\"}],\"headline\":\"Bad Coolant Level Sensor Symptoms\",\"datePublished\":\"2023-03-03T10:32:38+00:00\",\"dateModified\":\"2025-03-29T03:01:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/\"},\"wordCount\":1333,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/03\\\/coolant-level-sensor-of-a-car.jpg\",\"keywords\":[\"coolant-level-sensor\"],\"articleSection\":[\"Cooling System\",\"DIY\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/\",\"name\":\"Bad Coolant Level Sensor Symptoms - In The Garage with CarParts.com\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/03\\\/coolant-level-sensor-of-a-car.jpg\",\"datePublished\":\"2023-03-03T10:32:38+00:00\",\"dateModified\":\"2025-03-29T03:01:09+00:00\",\"description\":\"A faulty coolant level sensor can lead to other problems for your vehicle. Look out for these common symptoms.\",\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/03\\\/coolant-level-sensor-of-a-car.jpg\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2023\\\/03\\\/coolant-level-sensor-of-a-car.jpg\",\"width\":1500,\"height\":1000,\"caption\":\"coolant level sensor of a car\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/\",\"name\":\"In The Garage with CarParts.com\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#organization\",\"name\":\"CarParts.com\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/cp-itg-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/wp-content\\\/uploads\\\/2025\\\/03\\\/cp-itg-logo.png\",\"width\":2048,\"height\":398,\"caption\":\"CarParts.com\"},\"image\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/carpartscom\",\"https:\\\/\\\/x.com\\\/carpartscom\",\"https:\\\/\\\/www.instagram.com\\\/carpartscom\",\"https:\\\/\\\/www.youtube.com\\\/@CarPartscomOfficial\\\/\"]},{\"@type\":\"Person\",\"@id\":\"\",\"url\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/bad-coolant-level-sensor-symptoms\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Bad Coolant Level Sensor Symptoms - In The Garage with CarParts.com","description":"A faulty coolant level sensor can lead to other problems for your vehicle. Look out for these common symptoms.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/","og_locale":"en_US","og_type":"article","og_title":"Bad Coolant Level Sensor Symptoms - In The Garage with CarParts.com","og_description":"A faulty coolant level sensor can lead to other problems for your vehicle. Look out for these common symptoms.","og_url":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/","og_site_name":"In The Garage with CarParts.com","article_publisher":"https:\/\/www.facebook.com\/carpartscom","article_published_time":"2023-03-03T10:32:38+00:00","article_modified_time":"2025-03-29T03:01:09+00:00","og_image":[{"width":1500,"height":1000,"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_creator":"@carpartscom","twitter_site":"@carpartscom","twitter_misc":{"Written by":"","Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/#article","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/"},"author":[{"@type":"Person","$id":"4","name":"CarParts.com Research Team","jobTitle":"Expert Automotive Writer","description":"The CarParts.com Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by CarParts.com&#039;s thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.","knowsAbout":"Auto Repair, Car Maintenance, Auto Parts, Car Reviews","publishingPrinciples":"\/blog\/our-team\/","url":"https:\/\/www.carparts.com\/blog\/author\/thecpteam\/","sameAs":"https:\/\/www.facebook.com\/carpartscom, https:\/\/twitter.com\/CarPartscom, https:\/\/www.youtube.com\/@CarPartscomOfficial\/, https:\/\/www.instagram.com\/carpartscom\/"},{"@type":"Person","$id":"4","name":"Richard McCuistian","jobTitle":"ASE Master Automobile Technician","description":"Richard McCuistian has worked for nearly 50 years in the automotive field as a professional technician, an instructor, and a freelance automotive writer for Motor Age, ACtion magazine, Power Stroke Registry, and others. Richard is ASE certified for more than 30 years in 10 categories, including L1 Advanced Engine Performance and Light Vehicle Diesel.","knowsAbout":"Auto Repair, Car Maintenance, Auto Parts, Car Reviews","publishingPrinciples":"\/blog\/our-team\/","url":"https:\/\/www.carparts.com\/blog\/author\/richardmccuistian\/","sameAs":"https:\/\/www.linkedin.com\/in\/richard-mccuistian-2681891b\/, https:\/\/www.youtube.com\/user\/McCuistian"}],"headline":"Bad Coolant Level Sensor Symptoms","datePublished":"2023-03-03T10:32:38+00:00","dateModified":"2025-03-29T03:01:09+00:00","mainEntityOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/"},"wordCount":1333,"commentCount":0,"publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","keywords":["coolant-level-sensor"],"articleSection":["Cooling System","DIY"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/","url":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/","name":"Bad Coolant Level Sensor Symptoms - In The Garage with CarParts.com","isPartOf":{"@id":"https:\/\/www.carparts.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/#primaryimage"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/#primaryimage"},"thumbnailUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","datePublished":"2023-03-03T10:32:38+00:00","dateModified":"2025-03-29T03:01:09+00:00","description":"A faulty coolant level sensor can lead to other problems for your vehicle. Look out for these common symptoms.","inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/#primaryimage","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","width":1500,"height":1000,"caption":"coolant level sensor of a car"},{"@type":"WebSite","@id":"https:\/\/www.carparts.com\/blog\/#website","url":"https:\/\/www.carparts.com\/blog\/","name":"In The Garage with CarParts.com","description":"","publisher":{"@id":"https:\/\/www.carparts.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.carparts.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.carparts.com\/blog\/#organization","name":"CarParts.com","url":"https:\/\/www.carparts.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.carparts.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/03\/cp-itg-logo.png","contentUrl":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2025\/03\/cp-itg-logo.png","width":2048,"height":398,"caption":"CarParts.com"},"image":{"@id":"https:\/\/www.carparts.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/carpartscom","https:\/\/x.com\/carpartscom","https:\/\/www.instagram.com\/carpartscom","https:\/\/www.youtube.com\/@CarPartscomOfficial\/"]},{"@type":"Person","@id":"","url":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/"}]}},"featured_image_src":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","featured_image_src_square":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/03\/coolant-level-sensor-of-a-car.jpg","author_info":{"display_name":"","author_link":"https:\/\/www.carparts.com\/blog\/bad-coolant-level-sensor-symptoms\/"},"authors":[{"term_id":2607,"user_id":1651,"is_guest":0,"slug":"thecpteam","display_name":"CarParts.com Research Team","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/04\/thecpteam.jpg","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2024\/04\/thecpteam.jpg"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":2985,"user_id":1646,"is_guest":0,"slug":"richardmccuistian","display_name":"Richard McCuistian, ASE Certified Master Automobile Technician","avatar_url":{"url":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png","url2x":"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2021\/11\/richard-mccuistian.png"},"0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/81574","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/comments?post=81574"}],"version-history":[{"count":0,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/posts\/81574\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media\/81592"}],"wp:attachment":[{"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/media?parent=81574"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/categories?post=81574"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/tags?post=81574"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.carparts.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=81574"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}