P0A66
Drive Motor B Phase U Current
P0A66 is an OBD-II diagnostic trouble code meaning: Drive Motor B Phase U Current. Common causes: inverter or power electronics fault, problem in the motor windings (short circuit or open circuit). Estimated repair cost: $56–389.
Symptoms
- Reduced motor power
- Possible jerks during acceleration
- The fault indicator lights up
- Reducing electric range
- Switching to limited operation mode
Causes
- Inverter or power electronics fault
- Problem in the motor windings (short circuit or open circuit)
- Defective current sensors
- Connection or wiring problems
- Malfunction of the power unit control unit
How to Fix
- Check connections and integrity of wiring harnesses
- Diagnose the condition of the inverter
- Check the resistance of the motor windings
- Scan the control unit for additional errors
- If necessary, replace faulty components
Related codes
Error P0A66 by Vehicle Brand
FAQ
What does the P0A66 code mean?
P0A66 is an OBD-II diagnostic trouble code that indicates: Drive Motor B Phase U Current
What causes a P0A66 error code?
The most common causes of P0A66 include: Inverter or power electronics fault; Problem in the motor windings (short circuit or open circuit); Defective current sensors; Connection or wiring problems.
How do I fix a P0A66 diagnostic trouble code?
To fix P0A66: Check connections and integrity of wiring harnesses. Diagnose the condition of the inverter. Check the resistance of the motor windings. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0A66?
Limited driving only, diagnose soon
How much does it cost to fix P0A66?
The estimated repair cost for P0A66 is $56–389. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat