Day: October 16, 2025

Learn about the P0688 code meaning: a PCM power relay circuit open issue affecting many OBD-II vehicles.

Troubleshoot P0689 code: ECM/PCM power relay circuit voltage low. Learn causes, symptoms, and fixes for this generic OBD-II issue affecting multiple vehicle …

Diagnose P068A code: ECM/PCM relay de-energized early. High severity risk causing no-start conditions, stalling, or PCM damage.

Troubleshoot P068B code: ECM/PCM power relay de-energized too late. Learn diagnostic steps for Audi, VW, Dodge vehicles.

Troubleshoot P068C code for cylinder #7 glow plug circuit issues in diesel engines.

Troubleshoot P068D code for cylinder 7 glow plug circuit high voltage in diesel engines.

Trouble code P068E indicates low voltage in cylinder #8 glow plug circuit. Learn causes, symptoms, and fixes for this diesel engine issue affecting Ford, GM…

Troubleshoot P068F code for cylinder 8 glow plug circuit high voltage in diesel engines.

Learn about the P0690 code meaning: a generic OBD-II issue indicating a PCM power relay sensor circuit anomaly in vehicles like Chevrolet, Ford, VW, and more.