Code P1371 Description
The diagnostic code P1371 indicates a problem with the low-resolution signal from the crankshaft position sensor. The crankshaft position sensor is responsible for monitoring the position and speed of the crankshaft, which is essential for the engine control unit (ECU) to determine ignition timing and fuel delivery. When the ECU receives a weak or missing signal from the crankshaft position sensor, it can lead to various issues that may affect the vehicle’s performance and drivability.
Common Causes of P1371
NOTE: The listed causes may not be a complete list of all potential issues, and there may be other causes.
- Faulty crankshaft position sensor
- Damaged wiring or connectors
- Electromagnetic interference
- ECU malfunction
Symptoms of P1371
- Engine misfires
- Rough idle or stalling
- Poor acceleration
- Difficulty starting the engine
How to Fix P1371
- Perform a diagnostic scan to confirm the presence of the P1371 code.
- Inspect the crankshaft position sensor, wiring, and connectors for any damage or loose connections.
- Test the sensor’s output signal using a multimeter to ensure it meets specifications.
- Replace the crankshaft position sensor if it is found to be faulty.
- Clear the error code from the ECU and test the vehicle to ensure the issue has been resolved.