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Engine-Codes.com | All About OBDII Engine Codes

P0685 Honda

P0685 Honda - Electronic Control Module Power Control Circuit Malfunction

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P0685 Honda Comments |  Add Comment
Possible causes
- Faulty Engine Control Module (ECM) power relay
- ECM power relay harness is open or shorted
- ECM power relay circuit poor electrical connection
- Faulty (ECM)
Help with Possible causes What does this mean?
Tech notes
Check all the ECM fuses, if the fuses are OK try replacing the ECM relay.
Help with Tech Notes What does this mean?
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0685 Honda Description

The Engine Control Module (ECM) has detected that the ECM remains powered up after the ignition key has been turned off

P0685 Honda Information for specific Honda models
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