https://stream.echo6.co/videos/watch/c13152c0-bd25-4756-a418-b27270928804 Shop for New Auto Parts at 1AAuto.com https://1aau.to/c-100-az Have a check engine light with code P1391? Engine won't start? How does your crank sensor fit in with all that? In this video, Sue explains what crank sensors do, how the engine timing is related, and what you can do to resolve this problem if it happens to you. This is definitely one you don't want to ignore, so check out the video now! 0:00 Check Engine Light, No Start, and More: What is a Crank Sensor? Why Does Your Car or Truck Need One? 0:28 Don't Ignore a Check Engine Code Like P1391Even If the Engine Is Running OK 1:40 What Crank and Cam Sensor Problems Indicate 3:21 Investigating the Cause of the Code 5:57 Confirming Engine Timing is Not the Problem 9:12 Checking Electrical Resistance to Diagnose Sensors 12:22 Clearing Codes and Confirming New Parts Fixed the Problem! 13:09 SUBSCRIBE! | Shop 1AAuto.com Link Below! 🔧 List of tools used: • Flat Blade Screwdriver • Phillips Head Screwdriver • Complete Metric Socket Set • Ratchet • Gloves https://1aau.to/oaUa-1AXSS00048 • Safety Glasses • Scan Tool Subscribe: https://www.youtube.com/channel/UCVvE8kQTuZEykvMFZBVzftg?sub_confirmation=1 Check out our playlist: Tips & Secrets only Mechanics Know: https://www.youtube.com/playlist?list=PL37d7oWG6wDDqLG8BNFCEkbXEomZk1ITM 📱 Download the 1A Auto Repair App for more videos, torque specifications, and car repair information: https://1aau.to/appdownloadyt 🚗 For More Info visit us at https://1aau.to/h-fMn ⚠ DISCLAIMER: While 1A Auto strives to make the information provided in this video as accurate as possible, it makes no claims, promises, or guarantees about the accuracy, completeness or applicability of the content. No information contained in this video shall create any expressed or implied warranty or guarantee of any particular result. All do-it-yourself projects entail some risk. It is the sole responsibility of the viewer to assume this risk. 1A Auto is not responsible or liable for any loss damage (including, but not limited to, actual, consequential, or punitive), liability, claim, or any other injury or cause related to or resulting from any information posted in this video. Mon, 13 Apr 2026 11:53:21 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/c13152c0-bd25-4756-a418-b27270928804 All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.