Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- High
- Can I keep driving?
- Yes, but with caution
- Estimated cost
- $15 to $300
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P0687 ECM/PCM Power Relay Control Circuit High High
The P0687 code means the control circuit of the engine computer power relay shows high voltage, which points to an open circuit or a short to voltage. It can cause a no start or an engine that shuts off while driving. Check the fuse, relay, connector and wiring before replacing any part.