P27E4

Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–167 (est.)

Symptoms

Check Engine light comes on
Incorrect gear shifting
Reduced transmission performance
Noises from the transmission area
Transmission transition to emergency mode

Causes

Pump solenoid valve malfunction
Open or short circuit in control circuit
Poor contact in circuit connectors
Transmission fluid auxiliary pump malfunction
Transmission control module (TCM) problems

How to Fix

Check the condition of the pump solenoid valve
Check the integrity of the control circuit and wiring harness
Check connections and contacts in connectors
Check the operation of the auxiliary transmission fluid pump
If necessary, replace faulty components

Related codes

P27E3 P27E5 P27E6