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P0BFE

Drive Motor B Phase U-V-W Current Sensor Correlation

The phase U, V, and W current sensors of drive motor B do not correlate within the calibrated tolerance. Sum of phase currents should be near zero.

  • 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.

  • One sensor offset driftedCommon
  • Ground offset between sensorsPossible

Parts involved

  • Drive Motor B Phase U Current Sensor
  • Drive Motor B Phase V Current Sensor
  • Drive Motor B Phase W Current Sensor

P0BFE 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.