P091A
Gear Shift Position Circuit B
P091A is an OBD-II diagnostic trouble code meaning: Gear Shift Position Circuit B. Common causes: open or short circuit in wiring harness, shift position sensor malfunction. Estimated repair cost: $17–89.
Symptoms
- Incorrect gear shifting
- Check Engine light comes on
- The gearbox goes into emergency mode
- Difficulty shifting gears
- Loss of engine power
Causes
- Open or short circuit in wiring harness
- Shift position sensor malfunction
- Poor contact in connectors
- Problems with the transmission control unit
- Mechanical damage to wiring
How to Fix
- Check continuity of circuit B wiring harness
- Check the condition of connectors and contacts
- Test the shift position sensor
- Check the operation of the transmission control unit
- Replace damaged components
Related codes
Error P091A by Vehicle Brand
FAQ
What does the P091A code mean?
P091A is an OBD-II diagnostic trouble code that indicates: Gear Shift Position Circuit B
What causes a P091A error code?
The most common causes of P091A include: Open or short circuit in wiring harness; Shift position sensor malfunction; Poor contact in connectors; Problems with the transmission control unit.
How do I fix a P091A diagnostic trouble code?
To fix P091A: Check continuity of circuit B wiring harness. Check the condition of connectors and contacts. Test the shift position sensor. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P091A?
Limited driving only, diagnose soon
How much does it cost to fix P091A?
The estimated repair cost for P091A is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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