{"id":89035,"date":"2023-08-11T00:13:50","date_gmt":"2023-08-11T07:13:50","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=89035"},"modified":"2024-02-26T14:33:42","modified_gmt":"2024-02-26T22:33:42","slug":"fuel-low-what-does-the-low-fuel-light-mean","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/fuel-low-what-does-the-low-fuel-light-mean\/","title":{"rendered":"Fuel Low: What Does the Low Fuel Light Mean?"},"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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_3e3350-e0 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_3e3350-e0 > .kt-inside-inner-col,.kadence-column_3e3350-e0 > .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-column_3e3350-e0 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_3e3350-e0 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_3e3350-e0 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_3e3350-e0 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_3e3350-e0{position:relative;}@media all and (max-width: 1024px){.kadence-column_3e3350-e0 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_3e3350-e0 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_3e3350-e0 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-628c03  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-ccb21b\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_845c43-e4, .wp-block-kadence-advancedheading.kt-adv-heading_845c43-e4[data-kb-block=\"kb-adv-heading_845c43-e4\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_845c43-e4 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_845c43-e4[data-kb-block=\"kb-adv-heading_845c43-e4\"] 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-heading_845c43-e4 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_845c43-e4[data-kb-block=\"kb-adv-heading_845c43-e4\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_845c43-e4 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_845c43-e4\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>The low fuel level warning light turns on when there&rsquo;s inadequate fuel in the gas tank. &nbsp;It illuminates when a vehicle&rsquo;s fuel tank is at around 10% to 15% of its maximum capacity.<\/li><li>The PCM monitors fuel level with the help of a fuel level sensor.<\/li><li>Once the warning light illuminates, it&rsquo;s best to use the remaining fuel you have to find the nearest gas station.<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Running out of fuel in the middle of a trip is something all drivers want to avoid. Luckily, modern vehicles have a low fuel level warning light that illuminates once there&rsquo;s not enough fuel in the tank.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">When Does a Low Fuel Level Warning Light Turn On?<\/h2>\n\n\n\n<p>This warning light found on your dash illuminates once there&rsquo;s inadequate fuel in the gas tank.<\/p>\n\n\n\n<p>The low-fuel warning light typically illuminates when a vehicle&rsquo;s <a href=\"https:\/\/www.carparts.com\/fuel-tank\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel tank\">fuel tank<\/a> is at around 10% to 15% of its maximum capacity. Once you see this light on your dash (knowing your tank isn&rsquo;t full), it&rsquo;s safe to assume that there is only one to two gallons of fuel left in your fuel tank. You&rsquo;ll have to take your vehicle to the nearest gas station.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What Triggers the Low Fuel Level Warning Light?<\/h2>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/engine-control-module\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"powertrain control module\">powertrain control module<\/a> (PCM) can detect fuel levels with the help of a <a href=\"https:\/\/www.carparts.com\/fuel-level-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel level sensor\">fuel level sensor<\/a>. The mechanism usually has an arm that moves up and down. One end of the arm is attached to a resistor while the other end floats on top of the fuel in the tank. The PCM will interpret fuel level based on the position of the floating arm.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-1024x682.jpg\" alt=\"fuel level sensor detect fuel level\" class=\"wp-image-89057\" width=\"1024\" height=\"682\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-1024x682.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-300x200.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-768x512.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-1536x1024.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-600x400.jpg 600w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-1200x800.jpg 1200w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor-150x100.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/fuel-level-sensor.jpg 2000w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The powertrain control module (PCM) can detect fuel levels with the help of a fuel level sensor.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Is It Dangerous to Drive with a Low Fuel Level Warning Light?<\/h2>\n\n\n\n<p>Generally, it isn&rsquo;t dangerous to drive even if your fuel level is low. However, if you continue to drive, you&rsquo;ll eventually run out of fuel and get stuck in the middle of the road.<\/p>\n\n\n\n<p>Once the warning light illuminates, use the remaining fuel you have to find the nearest gas station. Remember that your car can break down if you run out of fuel. Check out our article about the <a href=\"https:\/\/www.carparts.com\/blog\/fact-or-myth-driving-with-less-than-a-quarter-of-a-tank-of-fuel-is-bad-for-your-car\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"risks of driving with low fuel\">risks of driving with low fuel<\/a> to learn more about it.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Long Can You Drive With the Low Fuel Level Warning Light?<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.carparts.com\/blog\/how-far-can-you-drive-on-an-empty-tank-of-gas\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"How far you can drive with an empty tank\">How far you can drive with an empty tank<\/a> depends on what type of vehicle you own. Diesel trucks, for instance, still have around three to four gallons of fuel left when the gauge says Empty. That means you can still drive around 100 miles. Trucks with bigger tanks can go as far as 200 miles.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Is My Fuel Level Warning Light On Even If My Tank Is Full?<\/h2>\n\n\n\n<p>But what if your gas tank is full? If your fuel level warning light still illuminates even after filling up your gas tank, you&rsquo;re probably dealing with a faulty part.<\/p>\n\n\n\n<p>Here are some of the other issues that can cause your fuel level warning light to illuminate:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Blocked Fuel Tank Ventilation Hole<\/h3>\n\n\n\n<p>A blockage in the fuel tank&rsquo;s ventilation hole can cause a fiberglass tank to shrink. The metal needle or wiper used to measure fuel can bend or break once this happens.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Damaged Variable Resistor<\/h3>\n\n\n\n<p>Corrosion can damage the small metal lines on your variable resistor. Aside from age, low-quality fuel and harmful additives can cause the materials on your resistor to corrode. So a failing resistor can also trigger the fuel level warning light.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p>A failing resistor can also trigger the fuel level warning light.<\/p><cite><em>&ndash;<\/em><a href=\"https:\/\/www.carparts.com\/blog\/author\/anthonyharlin\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Anthony Harlin, ASE Certified Master Automobile Technician\">Anthony Harlin, ASE Certified Master Automobile Technician<\/a><\/cite><\/blockquote>\n\n\n\n<h3 class=\"wp-block-heading\">Bad Float Switch\/Sensor<\/h3>\n\n\n\n<p>Your fuel level light can also turn on if your float sensor is damaged. Once it fails, it&rsquo;ll not be able to work with the variable resistor, resulting in accurate readings.<\/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\">Malfunctioning Fuel Gauge<\/h3>\n\n\n\n<p>Aside from faulty sensor components, a bad fuel gauge can also cause your low fuel level light to illuminate. The most common reason <a href=\"https:\/\/www.carparts.com\/blog\/a-crash-course-on-fuel-gauge-operation\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"why your fuel gauge fails\">why your fuel gauge fails<\/a> is a bad fuel level sending unit.<\/p>\n\n\n\n<p>Faulty wiring surrounding your gauge and fuel sender can also cause a similar issue. Get your vehicle checked by a trusted mechanic in case you notice symptoms such as erratic gauge readings.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What to Do If You Run Out of Fuel<\/h2>\n\n\n\n<p>Running out of fuel on a busy road makes you vulnerable to road collisions. If you know that your gas tank is almost empty, take the slow lane so that you can easily exit the road. A spluttering engine will die down anytime, so make sure that you stop at a safe spot where no other vehicle can bump into you.<\/p>\n\n\n\n<p>After that, you can switch your <a href=\"https:\/\/www.carparts.com\/blog\/a-definitive-guide-to-using-your-hazard-lights\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"hazard lights\">hazard lights<\/a> on to alert other drivers. Do this as soon as you notice the issue. It&rsquo;s dangerous to get stuck on the road&mdash;-especially if it&rsquo;s snowing or raining. Depending on where you&rsquo;re at, you can opt to contact roadside services or walk to the nearest gas station. Don&rsquo;t forget to lock your doors in case you decide to find a gas station near you.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How to Locate the Nearest Gas Station<\/h2>\n\n\n\n<p>If you&rsquo;re unfamiliar with the place you&rsquo;re in, you can still find a gas station easily as long as your phone still has reception. Google Maps, for instance, can show you the gas stations that are near your location. Using the filters, the map can even show you the gas stations you&rsquo;ve already visited and those you haven&rsquo;t yet.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get New Fuel Tank Components for Your Vehicle<\/h2>\n\n\n\n<p>It&rsquo;s quite nerve-wracking to see your fuel level gauge sitting on the &ldquo;empty&rdquo; mark only to find out that you still have a tank full of fuel. It might seem like a minor issue, but such problems are better addressed as soon as possible.<\/p>\n\n\n\n<p>Here at <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a>, fast shipping and high-quality parts are our top priority. Find all the <a href=\"https:\/\/www.carparts.com\/fuel-tanks-and-components\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"fuel tank components\">fuel tank components<\/a> you need from our website in a matter of minutes, and get your order delivered to your doorstep in as fast as two business days thanks to our strategically located warehouses across the US.<\/p>\n\n\n\n<p>Shopping for parts from the comfort of your home is much more convenient thanks to our user-friendly website and mobile app. Simply use our vehicle selector to check for fitment, and place your order with just a few clicks.<\/p>\n\n\n\n<p>Get the best deals online, and take advantage of our low-price guarantee. We source parts from today&rsquo;s top parts manufacturers in bulk to pass on the savings to you.<\/p>\n\n\n\n<p>Shop and order the parts you need today!<\/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\"> 4<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Running out of fuel in the middle of a trip is something all drivers want to avoid. Luckily, modern vehicles&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/fuel-low-what-does-the-low-fuel-light-mean\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":89058,"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":[52,3751],"tags":[1684],"ppma_author":[2607,3742],"class_list":{"0":"post-89035","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-warning-lights","9":"tag-fuel-level-sensor","10":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fuel Low: What Does the Low Fuel Light Mean? - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"Find out what an illuminated low fuel light means and what you should do when this indicator is triggered.\" \/>\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\/fuel-low-what-does-the-low-fuel-light-mean\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fuel Low: What Does the Low Fuel Light Mean? - In The Garage with CarParts.com\" \/>\n<meta property=\"og:description\" content=\"Find out what an illuminated low fuel light means and what you should do when this indicator is triggered.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.carparts.com\/blog\/fuel-low-what-does-the-low-fuel-light-mean\/\" \/>\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=\"2023-08-11T07:13:50+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-26T22:33:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2023\/08\/low-fuel-light-activated.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1333\" \/>\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=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/fuel-low-what-does-the-low-fuel-light-mean\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.carparts.com\\\/blog\\\/fuel-low-what-does-the-low-fuel-light-mean\\\/\"},\"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. 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