Answers
Aug 28, 2023 - 05:14 AM
Hi there,
Click this link to see more information about the code P0685 from our resource CarParts blog. The code stands for "ECM/PCM Power Relay Control Circuit open.” The trouble code points to a possible faulty PCM (Power Control Module), a bad PCM power relay, or some PCM electrical wiring issue. I hope this helps!
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