Why Car Sensors Typically use 5V Instead of 12V (Automotive Electrical) • Cars Simplified
Cars usually have a 12 volt battery and typically use that voltage to power components like motors and lights, so why don't sensors get the same treatment? This video explains why many sensors use 5 volts instead of 12, and how we ended up with specifically 5V in the first place. Many sensors end up running on a 5-volt output from the ECU/PCM, so it's an important part of the car to understand, especially for diagnosing problems with sensors and electronics. If you have any further questions about five volt sensor systems or automotive electrical in general, feel free to ask in the comments! OBD2 codes related to 5V reference issues: • P1295 No 5 Volts To TP Sensor (Chrysler, Jeep) • P1296 No 5 Volts To MAP Sensor (Chrysler, Jeep) • P1403 No 5 Volts To EGR Sensor (Chrysler, Jeep) • P1488 Auxiliary 5 Volt Supply Output Too Low (Chrysler, Jeep) • P1496 5 Volt Supply Output Too Low (Chrysler, Jeep) • P1635 5 Volt Reference Circuit (GM) • P1639 5 Volt Reference 2 Circuit (GM) See all codes: https://carssimplified.com/list/obd2-codes.php https://carssimplified.com/ Follow us on Instagram, Twitter, and more: https://carssimplified.com/social-media.php https://www.patreon.com/cars (Sometimes previews and exclusive content are shared on these platforms!) Main background track by Sawtooth: https://soundcloud.com/sawtoothmusic • https://djsawtooth.bandcamp.com/ • https://www.facebook.com/IAmSawtooth • https://twitter.com/IAmSawtooth Cars Simplified is a show dedicated to automotive education, including DIY repair, automotive news, auto industry changes, automotive technology, performance modifications, and more, all presented in a friendly and easy to digest manner! #CarsSimplified #CarsSimplifiedS6 #CarsSimplifiedElectronics #Automotive #Electrical #AutomotiveElectrical #YouCanLearnAnything #AutomotiveElectronics Disclaimer: Due to factors beyond the control of Cars Simplified, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Cars Simplified assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any video. Due to factors beyond the control of Cars Simplified, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Cars Simplified.
Cars usually have a 12 volt battery and typically use that voltage to power components like motors and lights, so why don't sensors get the same treatment? This video explains why many sensors use 5 volts instead of 12, and how we ended up with specifically 5V in the first place. Many sensors end up running on a 5-volt output from the ECU/PCM, so it's an important part of the car to understand, especially for diagnosing problems with sensors and electronics. If you have any further questions about five volt sensor systems or automotive electrical in general, feel free to ask in the comments! OBD2 codes related to 5V reference issues: • P1295 No 5 Volts To TP Sensor (Chrysler, Jeep) • P1296 No 5 Volts To MAP Sensor (Chrysler, Jeep) • P1403 No 5 Volts To EGR Sensor (Chrysler, Jeep) • P1488 Auxiliary 5 Volt Supply Output Too Low (Chrysler, Jeep) • P1496 5 Volt Supply Output Too Low (Chrysler, Jeep) • P1635 5 Volt Reference Circuit (GM) • P1639 5 Volt Reference 2 Circuit (GM) See all codes: https://carssimplified.com/list/obd2-codes.php https://carssimplified.com/ Follow us on Instagram, Twitter, and more: https://carssimplified.com/social-media.php https://www.patreon.com/cars (Sometimes previews and exclusive content are shared on these platforms!) Main background track by Sawtooth: https://soundcloud.com/sawtoothmusic • https://djsawtooth.bandcamp.com/ • https://www.facebook.com/IAmSawtooth • https://twitter.com/IAmSawtooth Cars Simplified is a show dedicated to automotive education, including DIY repair, automotive news, auto industry changes, automotive technology, performance modifications, and more, all presented in a friendly and easy to digest manner! #CarsSimplified #CarsSimplifiedS6 #CarsSimplifiedElectronics #Automotive #Electrical #AutomotiveElectrical #YouCanLearnAnything #AutomotiveElectronics Disclaimer: Due to factors beyond the control of Cars Simplified, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. Cars Simplified assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any video. Due to factors beyond the control of Cars Simplified, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Again any injury, damage or loss that may result from improper use of tools, equipment, or the information contained in this video is the sole responsibility of the user and not Cars Simplified.