P0A71
Generator Phase U Current High
P0A71 is an OBD-II diagnostic trouble code meaning: Generator Phase U Current High. Common causes: hybrid system generator malfunction, power electronics problems. Estimated repair cost: $167–556.
Symptoms
- Check Engine light comes on
- Hybrid system power reduction
- Increased noise from the generator
- Reduced performance of the hybrid system
- Possible problems with charging the high-voltage battery
Causes
- Hybrid system generator malfunction
- Power electronics problems
- Short circuit in phase U circuit
- Hybrid system controller malfunction
- Damage to alternator wiring harness
How to Fix
- Diagnose the hybrid system generator
- Check the continuity of phase U
- Test power electronics
- Check the operation of the hybrid system controller
- If necessary, replace the generator or its components
Related codes
Error P0A71 by Vehicle Brand
FAQ
What does the P0A71 code mean?
P0A71 is an OBD-II diagnostic trouble code that indicates: Generator Phase U Current High
What causes a P0A71 error code?
The most common causes of P0A71 include: Hybrid system generator malfunction; Power electronics problems; Short circuit in phase U circuit; Hybrid system controller malfunction.
How do I fix a P0A71 diagnostic trouble code?
To fix P0A71: Diagnose the hybrid system generator. Check the continuity of phase U. Test power electronics. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0A71?
Do not drive — repair immediately
How much does it cost to fix P0A71?
The estimated repair cost for P0A71 is $167–556. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat