Fault Code P0685
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0685
ECM/PCM Power Relay Control Circuit Open
Fault in the main power relay circuit for the engine computer (ECU).
Part Details
Part Name
Main ECU relay
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪150 - ₪600
Engine Location
Fuse and relay box
Symptoms
- Engine suddenly shuts off
- Will not start
Possible Causes
- 1Faulty relay
- 2Faulty wiring
- 3Bad connection in connector
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