Buick P1371 Code Description
The Buick P1371 code indicates a problem with the low-resolution signal received by the Engine Control Module (ECM). This signal is essential for the ECM to accurately control ignition timing and fuel injection. When this signal is missing or irregular, it can cause misfires, poor engine performance, and reduced fuel efficiency. The low-resolution signal is typically generated by the crankshaft position sensor, which provides information about the engine’s position and speed. If this signal is compromised, the ECM may not be able to operate the engine efficiently, leading to various issues.
Common Causes of Buick P1371 Code
NOTE: The listed causes may not be a complete list of all potential problems, and there may be other causes.
- Faulty crankshaft position sensor
- Wiring or connection issues in the circuit
- ECM software or hardware malfunction
- Damaged or corroded sensor connectors
- Engine mechanical issues affecting sensor operation
Symptoms of Buick P1371 Code
- Engine misfires or rough idle
- Reduced engine power or acceleration
- Difficulty starting the engine
- Poor fuel efficiency
- Illuminated check engine light
How to Fix Buick P1371 Code
- Start by diagnosing the problem using a scan tool to confirm the P1371 code and identify the low-resolution signal issue.
- Inspect the crankshaft position sensor and its wiring for any damage, wear, or corrosion.
- Test the sensor output using a multimeter to ensure it is functioning within specifications.
- If the sensor is faulty, replace it with a new one and reset the ECM to clear the code.
- Perform a road test of the vehicle to verify that the problem has been resolved and the low-resolution signal is now being received correctly.