Diagnostic Aids

WARNING: This page is about a different car, the 2003 Pontiac Grand Am, 2003 Oldsmobile Alero, 2003 Chevrolet Monte Carlo, and 2003 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

An over charging condition may set this DTC. See ENGINE ELECTRICAL DIAGNOSTIC SYSTEM CHECK in appropriate GENERATORS & REGULATORS article in ELECTRICAL.
Thoroughly inspect any circuitry suspected of causing the intermittent complaint. Go to INTERMITTENTS in TROUBLE SHOOTING - NO CODES - 3.4L ALERO, GRAND AM, IMPALA & MONTE CARLO article. Repair the circuits as necessary.