OBD Guide

P0A5F

Drive Motor A Phase U Current High

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Hybrid system power reduction
  • Check Engine Light Illuminated
  • Overheating of power electronics components
  • Unusual noises from the electric motor
  • The vehicle goes into emergency mode

Causes

  • Inverter fault
  • Damage to the motor winding
  • Problems with phase U wiring harness
  • Short circuit in phase U circuit
  • Faulty current sensors

How to Fix

  1. Check the resistance of the motor windings
  2. Inspect the wiring harness for damage
  3. Check the operation of the inverter
  4. Test current sensors
  5. Diagnose the hybrid system control unit

Related codes

Error P0A5F by Vehicle Brand