667 Transmission range sensor circuit below minimum voltage
How to read it
Code 667 reads as 6 flashes, pause, 6 flashes, pause, 7 flashes on the check-engine light. Jumper the self-test input to signal return at the test connector, then run the key on engine off self test and the running self test, counting the check-engine flashes each time.
New to flash codes? The OBD-I code reading guide walks through the paperclip method, code 12, and reading two-digit codes.
What does Ford code 667 mean?
667. Transmission range sensor circuit below minimum voltage. This code sets when your vehicle computer detects transmission range sensor circuit below minimum voltage.
Common causes of 667
- Wiring open circuit/short circuit to ground
- TR sensor
- ECM
How to fix 667
- Check the circuit wiring for a short to ground
- Test the TR sensor and replace it only if it fails its own test
- Test the ECM last, only after every circuit test has passed
- Clear the code, then retest to confirm the fix holds