← Back to list

P0372 Diagnostic and Fix for 1997 Chevrolet Trans Am Firebird

Model: Trans Am Firebird Fault Code: P0372 Posted: 2019-05-11 23:34

I am currently rebuilding my 1997 Chevrolet Trans Am Firebird and attempted to start the vehicle after replacing both the water pump and distributor. Upon starting, I heard a popping sound followed by an immediate stall. This occurred because the previous battery was too weak to provide sufficient power for ignition. Since then, the car has triggered a P0372 diagnostic trouble code (DTC), which I am unsure about. Could anyone clarify what this code means and how it might be resolved? Any technical guidance would be greatly appreciated.

Related fault codes
P0372
Comments (4)
Anonymous 2019-05-12 13:22

DTC P0372 - High Resolution Circuit Issue The P0372 code indicates a problem with the high resolution circuit in the ignition system. Common causes include: - An open circuit - A short to voltage - A short to ground - A faulty ignition module located within the distributor. This fault can result in misfiring or engine stalling, especially during startup.

Anonymous 2019-05-12 19:51

Why was the distributor replaced? Have you tested the ignition system voltage using a digital voltmeter (DVOM)? A proper voltage check is essential to diagnose issues related to the ignition circuit before replacing components.

Anonymous 2019-05-12 20:22

To troubleshoot, disconnect the connector at the distributor and verify if there is 5 volts present on terminal B (purple/white wire), which is the high-resolution signal wire from the Powertrain Control Module (PCM). This test helps determine whether the ignition module or wiring is faulty.

Anonymous 2019-05-14 20:11

It's concerning that you're seeking a solution without first performing basic diagnostic tests. A reliable fix requires hands-on testing, not guesswork—consider using a DVOM and following proper troubleshooting procedures instead of relying on random tools like a magic eight ball.