Powertrain
generic / SAE
P088C
Reverse Inhibit Control Circuit Low
Voltage on the reverse inhibit control circuit is below the expected window. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 8C
Possible causes
- Wire shorted to ground high
- Actuator internal short medium
- Connector pins corroded - high contact resistance low
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 120–600 €
- Estimated time: 0.5–3 h
- Component: reverse inhibit control
- Component: wiring harness
- Component: tcm
- MIL / check engine light
- limp mode possible
Sources
References
sae:J2012