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P0C4F Powertrain

Drive Motor B Position Exceeded Learning Limit

The required adaptation offset for drive motor B position sensor exceeds the calibrated learning window. Sensor or rotor mechanism out of nominal range.

Affected components

  • Drive motor b position sensor
  • Hybrid control module

Common causes

  • High likelihood: Sensor reference drifted
  • Medium likelihood: Mechanical drift in rotor mounting

Possible symptoms

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

Diagnostic notes

  • The malfunction indicator lamp may illuminate
  • Reduced-power or limp mode may occur

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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