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P0A5F

Drive Motor A Phase U Current High

Drive Motor A Phase U Current High: the control module has detected this fault condition. This affects electric-drive motor control.

  • Check engine light: Yes
  • Emissions related: No
  • Repair difficulty: hard

Symptoms

  • EV/hybrid system warning light on
  • Reduced motor power or torque
  • Possible limp mode or vehicle shutdown

Common causes

Ordered by how often each turns out to be the cause.

  • Short between motor phasesCommon
  • Rotor stalled - high stall currentPossible

Parts involved

  • Drive Motor A Phase U
  • Inverter

P0A5F is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.