P1370 Buick Code – Ignition Control Module 4X Reference Circuit Too Many Pulses

Code P1370 Description Buick

The Buick P1370 code indicates a problem with the ignition control module’s (ICM) 4X reference circuit, specifically indicating that there are too many pulses detected. The ICM is responsible for controlling the engine’s ignition timing by sending signals to the ignition coil to trigger the spark at the right time. When this reference circuit has too many pulses, it can cause misfires, rough idle, and poor vehicle performance.

Common Causes of Buick P1370 Code

NOTE: The listed causes may not be a complete list of all potential issues, and there may be other causes.

1. Faulty ignition control module
2. Wiring issues in the 4X reference circuit
3. Engine control module sending incorrect signals
4. Electrical interference or short circuits
5. Corrosion or damage to electrical connections

Symptoms of P1370 Buick

1. Rough idle or engine misfires
2. Decreased engine performance
3. Poor fuel consumption
4. Check Engine light is on
5. Engine stalling or hesitation during acceleration

How to Fix Buick Code P1370

1. Start by diagnosing the exact cause of the problem using a scan tool to identify the source of the issue.
2. Inspect the wiring of the 4X reference circuit for any damage, corrosion, or loose connections.
3. Test the ignition control module to determine if it is functioning properly or needs to be replaced.
4. Check the engine control module for possible faults or programming errors that could be causing the excessive pulses.
5. Repair or replace any faulty components, clear the code, and test the vehicle to ensure the problem has been resolved.