P0A71

Generator Phase U Current High

Severity

🔴 High

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–556 (est.)

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

P0A70 P0A72 P0A73