P0685 OBD Code Definition:
P0685 Electronic Control Module Power Control Circuit Malfunction
P0685 OBD Code Description:
OBD Code P0685
ECM/PCM Power Relay Control Circuit /Open
What’s mean?
OBD2 Code P0685 Definition:
The Engine Control Module (ECM) has detected that the ECM remains powered up after the ignition key has been turned off
Symptoms
Possible sumptoms of P0685
– Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
Possible causes of P0685
– ECM power control circuit is open or shorted – Failed ECM power relay – Failed ECM
Possible Solutions
does ecm power control circuit is open or shorted causes the car to not start i’m trying to find because my car won’t start and when i turn the key i get nothing no click ing or starting