Electric/Auxiliary Transmission Fluid Pump Motor Torque Out Of Range
The motor torque required by the auxiliary transmission fluid pump is outside the calibrated window for the commanded duty. Pump load too high or too low for expected operation.
Affected components
- Aux transmission pump
- Transmission fluid
Common causes
- High likelihood: Pump internal wear changes torque demand
- Medium likelihood: Fluid viscosity outside spec
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
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.