P0DE4

Electric/Auxiliary Transmission Fluid Pump A Motor Over Temperature

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$167–444 (est.)

Symptoms

The Check Engine light comes on
Gear shifting problems
Noise or hum from the transmission area
Reduced transmission efficiency
Transmission overheating

Causes

Insufficient cooling of the pump motor
Contaminated or low transmission fluid level
Electrical faults (problems with wiring, connectors)
Pump motor failure
Incorrect operation of the pump control system

How to Fix

Check the level and condition of the transmission fluid
Diagnose the electrical circuit of the pump (wiring, connectors, fuses)
Check the operation of the pump motor
Clean the pump cooling system
Replacing the transmission fluid auxiliary pump if necessary

Related codes

P0DE5 P0DE6 P0DE7