{"id":69885,"date":"2022-06-10T01:13:15","date_gmt":"2022-06-10T08:13:15","guid":{"rendered":"https:\/\/blogv2prod.wpenginepowered.com\/blog\/?p=69885"},"modified":"2024-01-31T18:13:09","modified_gmt":"2024-02-01T02:13:09","slug":"8-of-the-most-important-car-sensors-you-should-know-about","status":"publish","type":"post","link":"https:\/\/www.carparts.com\/blog\/8-of-the-most-important-car-sensors-you-should-know-about\/","title":{"rendered":"8 of the Most Important Car Sensors You Should Know About"},"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\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span><style>.kadence-column_ab29bf-d8 > .kt-inside-inner-col{border-top-width:0px;border-right-width:0px;border-bottom-width:0px;border-left-width:0px;}.kadence-column_ab29bf-d8 > .kt-inside-inner-col,.kadence-column_ab29bf-d8 > .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_ab29bf-d8 > .kt-inside-inner-col{column-gap:var(--global-kb-gap-sm, 1rem);}.kadence-column_ab29bf-d8 > .kt-inside-inner-col{flex-direction:column;}.kadence-column_ab29bf-d8 > .kt-inside-inner-col > .aligncenter{width:100%;}.kadence-column_ab29bf-d8 > .kt-inside-inner-col:before{opacity:0.3;}.kadence-column_ab29bf-d8{position:relative;}@media all and (max-width: 1024px){.kadence-column_ab29bf-d8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}@media all and (max-width: 767px){.kadence-column_ab29bf-d8 > .kt-inside-inner-col{flex-direction:column;justify-content:center;}}<\/style>\n<div class=\"wp-block-kadence-column inner-column-1 kadence-column_ab29bf-d8 qk-look-widget\"><div class=\"kt-inside-inner-col\">\n<div class=\"wp-block-ultimate-post-row ultp-block-5238e3  qk-main-wrap\"><div class=\"ultp-row-wrapper\"><div class=\"ultp-row-content\">\n<div class=\"wp-block-ultimate-post-column ultp-block-48dda5\"><div class=\"ultp-column-wrapper\"><style>.wp-block-kadence-advancedheading.kt-adv-heading_b3940f-23, .wp-block-kadence-advancedheading.kt-adv-heading_b3940f-23[data-kb-block=\"kb-adv-heading_b3940f-23\"]{text-align:center;font-size:20px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_b3940f-23 mark.kt-highlight, .wp-block-kadence-advancedheading.kt-adv-heading_b3940f-23[data-kb-block=\"kb-adv-heading_b3940f-23\"] 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_b3940f-23 img.kb-inline-image, .wp-block-kadence-advancedheading.kt-adv-heading_b3940f-23[data-kb-block=\"kb-adv-heading_b3940f-23\"] img.kb-inline-image{width:150px;vertical-align:baseline;}<\/style>\n<div class=\"kt-adv-heading_b3940f-23 summary-title wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_b3940f-23\"><span>Summary<\/span><\/div>\n\n\n\n<ul class=\"wp-block-list\"><li>Most modern vehicles have a powertrain control module that utilizes multiple sensors to detect problems in key vehicle systems.<\/li><li>The oxygen sensor, the crankshaft position sensor, and the mass air flow sensor are some of the most common types of vehicle sensors.<\/li><li>These sensors also help the vehicle computer optimize overall performance. For example, the data from the oxygen sensors helps the PCM calculate the proper air-fuel mixture<\/li><\/ul>\n<\/div><\/div>\n<\/div><\/div><\/div>\n<\/div><\/div>\n\n\n\n\n\n<p>Back in the day, tuning up your engine was as simple as adjusting a few screws on the <a href=\"https:\/\/www.carparts.com\/carburetor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"carburetor\">carburetor<\/a>. But with the developments in automotive technology, it&rsquo;ll take more than a screwdriver to diagnose the problems in your vehicle.<\/p>\n\n\n\n<p>Most vehicles nowadays are equipped with many different sensors that alert 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) when they detect problems. These issues can range from a simple gas cap issue to more pressing problems like a potential internal engine failure.<\/p>\n\n\n\n<p>These sensors also play an important role in optimizing your vehicle&rsquo;s overall performance. They help the PCM adjust the fuel mixture and regulate ignition timing, among other things.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Most Common Types of Car Sensors<\/h2>\n\n\n\n<p>As a driver, you must know what these sensors are and how they contribute to your vehicle&rsquo;s performance. Here are some of the most common car sensors you should know about.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/oxygen-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Oxygen Sensor\">Oxygen Sensor<\/a><\/h3>\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\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated-1024x602.jpg\" alt=\"Car Part Oxygen Sensor Downstream Isolated\" class=\"wp-image-69886\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Part-Oxygen-Sensor-Downstream-Isolated.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The oxygen (O2) sensor measures the exhaust&rsquo;s oxygen content.<\/figcaption><\/figure>\n\n\n\n<p>The oxygen (O2) sensor measures the exhaust&rsquo;s oxygen content. It is typically installed in the exhaust manifold or positioned downstream from the manifold in the exhaust pipe. The O2 sensor is responsible for monitoring the oxygen levels in the exhaust stream and ambient air.<\/p>\n\n\n\n<p>The O2 sensor also plays an important role in emissions control and calculating the right air-to-fuel mixture for efficient fuel combustion.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/crankshaft-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Crankshaft Position Sensor\">Crankshaft Position Sensor<\/a><\/h3>\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\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background-1024x602.jpg\" alt=\"Car Crankshaft Position Sensor with White Background\" class=\"wp-image-69887\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Crankshaft-Position-Sensor-with-White-Background.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The crankshaft position sensor helps determine crankshaft position and engine speed (RPM).<\/figcaption><\/figure>\n\n\n\n<p>The crankshaft position sensor helps determine crankshaft position and engine speed (RPM). The sensor sends signals to the PCM, which uses the information to control ignition timing and (in some cases) fuel injector timing.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/mass-air-flow-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Mass Air Flow Sensor\">Mass Air Flow Sensor<\/a><\/h3>\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\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image-1024x602.jpg\" alt=\"Mass Air Flow Sensor Isolated Image\" class=\"wp-image-69891\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Mass-Air-Flow-Sensor-Isolated-Image.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Mass air flow (MAF) sensors are typically used in electronic fuel injection systems.<\/figcaption><\/figure>\n\n\n\n<p>Mass air flow (MAF) sensors are typically used in electronic fuel injection systems. They calculate the amount of air volume delivered to the engine.<\/p>\n\n\n\n<p>The PCM uses the MAF sensor for two main purposes: to determine the amount of fuel needed and base pulse-width numbers and calculate the fuel delivery needs of the engine based on throttle position and engine speed.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/map-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Manifold Absolute Pressure Sensor\">Manifold Absolute Pressure Sensor<\/a><\/h3>\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\/2022\/06\/MAP-Sensor-Isolated-Image-1024x602.jpg\" alt=\"MAP Sensor Isolated Image\" class=\"wp-image-69889\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/MAP-Sensor-Isolated-Image-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/MAP-Sensor-Isolated-Image-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/MAP-Sensor-Isolated-Image-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/MAP-Sensor-Isolated-Image-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/MAP-Sensor-Isolated-Image-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/MAP-Sensor-Isolated-Image.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The manifold absolute pressure (MAP) sensor is used on a speed-density type fuel injection system to sense engine load.<\/figcaption><\/figure>\n\n\n\n<p>The manifold absolute pressure (MAP) sensor is used on a speed-density type fuel injection system to sense engine load. It has a ceramic or silicon wafer on one side that&rsquo;s exposed to the intake manifold.<\/p>\n\n\n\n<p>As the engine vacuum changes, the pressure difference on the wafer changes the output voltage or frequency of the <a href=\"https:\/\/www.carparts.com\/blog\/is-it-safe-to-drive-with-a-bad-map-sensor\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"MAP sensor\">MAP sensor<\/a>. Engines equipped with a MAF sensor use a MAP sensor as a backup and for diagnosing other systems like exhaust gas recirculation (EGR).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/knock-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Knock Sensor\">Knock Sensor<\/a><\/h3>\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\/2022\/06\/Replacement-Knock-Sensor-Isolated-1024x602.jpg\" alt=\"Replacement Knock Sensor Isolated\" class=\"wp-image-69893\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Knock-Sensor-Isolated-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Knock-Sensor-Isolated-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Knock-Sensor-Isolated-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Knock-Sensor-Isolated-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Knock-Sensor-Isolated-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Knock-Sensor-Isolated.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>A knock sensor detects any signs of abnormal combustion, such as ping, spark knock, or detonation.<\/figcaption><\/figure>\n\n\n\n<p>A knock sensor detects any signs of abnormal combustion, such as ping, spark knock, or detonation. Abnormal combustion creates a rapid pressure increase in the cylinder, resulting in a vibration in the engine block.<\/p>\n\n\n\n<p>Once the knock sensor detects this vibration, it sends a signal to the PCM to retard the ignition timing until the knock is eliminated. This reduces the damaging effects of abnormal combustion on pistons and other engine parts.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/iat-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Intake Air Temperature Sensor\">Intake Air Temperature Sensor<\/a><\/h3>\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\/2022\/06\/Replacement-IAT-Sensor-Isolated-1024x602.jpg\" alt=\"Replacement IAT Sensor Isolated\" class=\"wp-image-69890\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-IAT-Sensor-Isolated-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-IAT-Sensor-Isolated-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-IAT-Sensor-Isolated-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-IAT-Sensor-Isolated-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-IAT-Sensor-Isolated-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-IAT-Sensor-Isolated.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The intake air temperature (IAT) sensor is a negative temperature coefficient (NTC) thermistor that provides the PCM with temperature readings of the air that&rsquo;s entering the engine.<\/figcaption><\/figure>\n\n\n\n<p>The intake air temperature (IAT) sensor is a negative temperature coefficient (NTC) thermistor that provides the PCM with temperature readings of the air that&rsquo;s entering the engine.<\/p>\n\n\n\n<p>This information is crucial for fuel control and spark timing. In some engines, a throttle-body temperature (TBT) sensor determines the air temperature entering the engine instead of an IAT sensor.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/throttle-position-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Throttle Position Sensor\">Throttle Position Sensor<\/a><\/h3>\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\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated-1024x602.jpg\" alt=\"Replacement Throttle Position Sensor Isolated\" class=\"wp-image-69892\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Replacement-Throttle-Position-Sensor-Isolated.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>Older vehicles have just one TP sensor, whereas newer models with electronic throttle control (ECT) have two sensors as a fail-safe measure.<\/figcaption><\/figure>\n\n\n\n<p>As you might have guessed, the throttle position (TP) sensor measures the position of the throttle blade. Older vehicles have just one TP sensor, whereas newer models with electronic throttle control (ECT) have two sensors as a fail-safe measure.<\/p>\n\n\n\n<p>The PCM uses the TP sensor signal in a variety of ways. For example, the PCM uses the input from the sensor when calculating ignition timing, fuel delivery, and automatic transmission operation.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><a href=\"https:\/\/www.carparts.com\/coolant-temperature-sensor\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Engine Coolant Temperature Sensor\">Engine Coolant Temperature Sensor<\/a><\/h3>\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\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated-1024x602.jpg\" alt=\"Car Coolant Temperature Sensor Isolated\" class=\"wp-image-69894\" width=\"1024\" height=\"602\" srcset=\"https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated-1024x602.jpg 1024w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated-300x176.jpg 300w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated-768x452.jpg 768w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated-1536x904.jpg 1536w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated-150x88.jpg 150w, https:\/\/www.carparts.com\/blog\/wp-content\/uploads\/2022\/06\/Car-Coolant-Temperature-Sensor-Isolated.jpg 1700w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><figcaption>The engine coolant temperature (ECT) sensor informs the PCM of the current engine temperature.<\/figcaption><\/figure>\n\n\n\n<p>The <a href=\"https:\/\/www.carparts.com\/blog\/engine-coolant-temperature-sensor-purpose-location-and-failure-signs\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"engine coolant temperature (ECT) sensor\">engine coolant temperature (ECT) sensor<\/a> informs the PCM of the current engine temperature. It is a high-authority sensor that lets the PCM adjust the spark timing and fuel mixture depending on the temperature of the engine.<\/p>\n\n\n\n<p>The ECT sensor also provides critical input for parameters, such as O2 sensor closed-loop status, canister purge on\/off times, and idle speed.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs About Vehicle Sensors<\/h2>\n\n\n\n<p>Here are a couple of frequently asked questions (FAQs) about the different sensors in a car.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How Many Wheel Speed Sensors Do Cars Have?<\/h3>\n\n\n\n<p>Most vehicles are equipped with four-wheel speed sensors&#19968;one on each wheel.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Can You Drive a Car Without O2 Sensors?<\/h3>\n\n\n\n<p>Your car might run without a functional O2 sensor, but it&rsquo;s likely that you&rsquo;ll notice a couple of performance issues.<\/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<p>Without a working O2 sensor, the PCM won&rsquo;t be able to calculate the appropriate air-to-fuel mixture, which can make your car stall, run rough, and run sluggish. Driving without an O2 sensor can also result in an overly rich fuel mixture and cause your vehicle to consume more fuel than usual.<\/p>\n\n\n\n<p>It&rsquo;s also important to note that removing your car&rsquo;s O2 sensors is illegal because the O2 sensors monitor the efficiency of the catalytic converter, which is a primary emissions control device.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Bottom Line<\/h2>\n\n\n\n<p>Each sensor plays a critical role in your vehicle&rsquo;s operation, which is why it&rsquo;s important to pay attention to the telltale signs that they have an issue. Aside from an illuminated check engine light, signs that indicate sensor problems include performance issues, poor fuel economy, and more.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Where to Get Car Sensor for Your Vehicle<\/h2>\n\n\n\n<p>Now that you know more about <a href=\"https:\/\/www.carparts.com\/search?q=Sensors\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"car sensors\">car sensors<\/a>, it goes without saying that you shouldn&rsquo;t put off replacing them if they malfunction or stop working. After all, various car systems rely on them for information crucial to the optimal performance of your vehicle. They could cause various problems that will not only require costly repairs but also make driving dangerous.<\/p>\n\n\n\n<p>Luckily, <a href=\"https:\/\/www.carparts.com\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"CarParts.com\">CarParts.com<\/a> has an array of high-quality car sensors for you to choose from. We&rsquo;re confident with the quality of our aftermarket auto parts because we partnered with only the most trusted manufacturers in the industry. That means you&rsquo;re sure to get sensors that work like your stock part.<\/p>\n\n\n\n<p>Take advantage of our fast and reliable shipping. Place your order today, and get it in as fast as two business days, thanks to our strategically located warehouses across the country. If you&rsquo;re on a budget, don&rsquo;t worry. Our car sensors are available at competitive prices to give you the best value for your money.<\/p>\n\n\n\n<p>Check out our catalog and shop for the car sensor 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\"> 6<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>Back in the day, tuning up your engine was as simple as adjusting a few screws on the carburetor. But&#8230; <a href=\"https:\/\/www.carparts.com\/blog\/8-of-the-most-important-car-sensors-you-should-know-about\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":4,"featured_media":69916,"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":[52,3747],"tags":[1252,1623,1609,1443,1355,1462,1190,1679],"ppma_author":[2607,2855],"class_list":{"0":"post-69885","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-diy","8":"category-engine","9":"tag-coolant-temperature-sensor","10":"tag-crankshaft-position-sensor-2","11":"tag-iat-sensor","12":"tag-knock-sensor","13":"tag-map-sensor-2","14":"tag-mass-air-flow-sensor-2","15":"tag-oxygen-sensor-2","16":"tag-throttle-position-sensor","17":"entry"},"acf":{"adrotate_specific_mobile_ad":"","adrotate_specific_desktop_ad":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>8 of the Most Important Car Sensors You Should Know About - In The Garage with CarParts.com<\/title>\n<meta name=\"description\" content=\"O2 sensor, MAF and MAP sensors, knock sensor and more. 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When not working in the Contact Center in Grand Prairie, Texas for CarParts.com, he\u2019s attending race events and car shows throughout the country. He also loves to travel in his  40-foot motorhome, exploring abandoned mines and ghost towns. 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