Electric/Auxiliary Transmission Fluid Pump Control Module Feedback Signal High
The auxiliary transmission fluid pump control module feedback signal reports a feedback signal high condition.
Affected components
- Aux trans pump control module
- Wiring harness
- Tcm
Common causes
- High likelihood: Wire shorted to B+
- Medium likelihood: Module output high
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.