P0A91
Drive Motor B Performance
P0A91 is an OBD-II diagnostic trouble code meaning: Drive Motor B Performance. Common causes: motor b fault, inverter problems. Estimated repair cost: $167–556.
Symptoms
- Power reduction
- Increased fuel consumption
- Check Engine light comes on
- Unstable operation of the hybrid system
- Problems with regenerative braking
Causes
- Motor B fault
- Inverter problems
- Wiring harness damage
- Malfunction of rotor position sensors
- Problems with the control module
How to Fix
- Check the condition of motor B
- Diagnose the inverter
- Check the integrity of the wiring harness
- Check rotor position sensors
- Scan the control module for errors
Related codes
Error P0A91 by Vehicle Brand
FAQ
What does the P0A91 code mean?
P0A91 is an OBD-II diagnostic trouble code that indicates: Drive Motor B Performance
What causes a P0A91 error code?
The most common causes of P0A91 include: Motor B fault; Inverter problems; Wiring harness damage; Malfunction of rotor position sensors.
How do I fix a P0A91 diagnostic trouble code?
To fix P0A91: Check the condition of motor B. Diagnose the inverter. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0A91?
Limited driving only, diagnose soon
How much does it cost to fix P0A91?
The estimated repair cost for P0A91 is $167–556. Actual cost depends on your vehicle, location, and labor rates.
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