Buick Code P1374 Description
Buick code P1374 refers to a 3X reference circuit error. In vehicles, the 3X reference circuit is responsible for providing a signal to the engine control module (ECM) that helps determine the crankshaft position. This information is crucial for the ECM to properly adjust ignition timing and fuel injection. When this circuit malfunctions or fails, it can lead to significant engine performance issues, causing power loss, rough idling, and potentially even stalling. Ignoring this code can result in more severe engine problems over time, as the ECM relies on this data to operate efficiently.
Common Causes of Buick Code P1374
NOTE: The listed causes may not be a complete list of all potential issues, and there could be other causes.
- Faulty 3X reference sensor
- Wiring issues in the circuit
- Corrosion or damage to connectors
- ECM failure
- Poor electrical connections
Symptoms of Buick Code P1374
- Engine misfires
- Rough idling
- Decreased fuel efficiency
- Engine stalling
- Illuminated check engine light
How to Fix Buick Code P1374
- Start by using a diagnostic scanner to confirm the Buick P1374 code and identify the specific issue.
- Inspect the wiring and connectors associated with the 3X reference circuit for any signs of damage or corrosion.
- Test the 3X reference sensor to determine if it is functioning correctly. Replace it if necessary.
- Clear the error code from the ECM once repairs are completed.
- Perform a road test of the vehicle to ensure the problem is resolved and the Check Engine light does not reappear.