Error code
OBD2 P0690
OBD2P0690
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
ECM/PCM Power Relay Sense Circuit High.
Severity
moderateCan drive, but may experience issues with engine performance and electrical systems.
Summary
P0690 indicates an issue with the ECM/PCM power relay sense circuit being too high, which can affect the engine control module's ability to manage electrical systems.
Common Causes
- Wiring short to positive
- ECM/PCM power relay failure
- Fault in the ECM
Fixes
- Replace faulty relay or repair wiring issue.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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