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P0C27 Powertrain

Electric/Auxiliary Transmission Fluid Pump A Motor Current Low

The motor current of auxiliary transmission fluid pump A reports a motor current low fault.

Affected components

  • Aux trans pump a motor

Common causes

  • High likelihood: Pump load lower than expected
  • Medium likelihood: Motor winding partially open

Possible symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

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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