Diagnose and Fix OBD-II trouble code P0687
The OBD-II trouble code P0687 indicates an issue with the ECM/PCM (Engine/Powertrain Control Module) power relay control circuit, specifically that it is experiencing a “high” voltage. This means the powertrain control module has detected an incorrect, abnormal, or erratic voltage reading from the relay circuit that provides its power. Possible causes of the P0687 code include: Symptoms … Read more