Error code
OBD2 P0687
OBD2P0687
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
ECM/PCM Power Relay Control Circuit High.
Severity
moderateCan drive but should be addressed soon as it may cause further issues.
Summary
P0687 indicates a high voltage issue in the ECM/PCM power relay control circuit, specifically related to the engine control relay.
Common Causes
- Wiring short to earth on the engine control relay
Fixes
- Replace the faulty engine control relay.
FAQ
What does P0687 mean?
P0687 indicates a high voltage issue in the ECM/PCM power relay control circuit, specifically related to the engine control relay.
How do I fix P0687?
The most common solution is to replace the faulty engine control relay. It's recommended to consult with a professional mechanic for proper diagnosis and repair.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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