Electric/Auxiliary Transmission Fluid Pump Control Module Internal Temperature Too High

Common symptoms

What you'll notice

• Check the fluid level and condition in the transmission and replace if necessary.
• Inspect and clean the transmission cooler and lines to ensure proper fluid flow and cooling.
• Check and repair any damaged or faulty wiring or connectors in the transmission fluid pump control module circuit.
• Replace the transmission fluid pump control module if it is determined to be defective.

Common causes

Most likely first

1. Faulty electric/auxiliary transmission fluid pump control module
2. Insufficient cooling for the control module
3. Short circuit or electrical malfunction in the control module
4. Excessive heat generated by the vehicle's transmission system
5. Inadequate airflow to the control module

How to diagnose & fix

Work through it in order

1. Overheating of the transmission fluid
2. Transmission slipping or shifting erratically
3. Illumination of the "Check Engine" or "Transmission" warning light
4. Loss of power or decreased acceleration
5. Unusual noises or vibrations coming from the transmission