OBD
P0801
Reverse Inhibit Control Circuit/Open
What it means
P0801 means Reverse Inhibit Control Circuit/Open.
Check these first
- An open in the reverse inhibit control circuit
- A faulty reverse inhibit control switch
- Corrosion at the reverse inhibit control connector
- A TCM fault on the reverse inhibit input
- An ECU fault
What to do next
- Read the reverse inhibit circuit state on a scan tool
- Test the reverse inhibit circuit for an open
- Check the switch and connector
- Check the throttle position sensor signal
- Replace the switch if the circuit tests good
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.