OBD Codes List

Diagnostic reference · P088D

P088D

Reverse Inhibit Control Circuit High

System
Transmission (P code)
Lamp
Check Engine Light
Category
Powertrain - Transmission

What it means

P088D means Reverse Inhibit Control Circuit High.

Check these first

  • An open in the reverse inhibit control wire
  • A failed reverse inhibit solenoid
  • A backed out reverse inhibit connector pin
  • A TCM that misreads the reverse inhibit circuit

What to do next

  1. Read the reverse inhibit circuit state on a scan tool
  2. Test the reverse inhibit control wire for an open
  3. Check the reverse inhibit solenoid resistance
  4. Wiggle test the reverse inhibit connector
  5. Replace the solenoid if the circuit stays high
  6. Clear the code and retest

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Updated

Generic SAE J2012 definition. Last updated 2026-10-10.