P0372 Fault Code

Timing Reference High Resolution Signal A Too Few Pulses

• What does that mean?
• Symptoms
• Causes
• Solutions

The P0372 fault code indicates that the Engine Control Module (ECM) has detected an insufficient number of pulses from the Timing Reference High Resolution Signal A. This signal is critical for determining the engine's position and timing, and a lack of sufficient pulses can lead to performance issues or misfiring.

What are the symptoms of the P0372 code?

When the P0372 code is present, drivers may experience:

• Engine misfires or rough idling.
• Difficulty starting the engine.
• Reduced engine performance and fuel efficiency.
• Stalling or unexpected shutdown of the engine during operation.

What causes the P0372 code?

Possible causes for the P0372 fault code include:

• Damaged or faulty crankshaft position sensor.
• Issues with the wiring or connectors associated with the sensor.
• Problems in the Engine Control Module (ECM) itself.
• Inaccurate timing belt or chain issues affecting the signal.
• Contamination or wear of the sensor due to high mileage or environmental conditions.

How to fix P0372?

To resolve the P0372 fault code, the following steps can be taken:

• Inspect the crankshaft position sensor for damage or wear, and replace if necessary.
• Check the wiring and connectors for any signs of corrosion, shorts, or breaks, and repair as needed.
• Ensure that the timing belt or chain is correctly installed and in good condition.
• Clear the fault code from the ECM and conduct a test drive to see if the issue reoccurs.