P0C25

Electric/Auxiliary Transmission Fluid Pump Control Module Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Illumination of the fault warning lamp (Check Engine)
Reduced transmission efficiency
Unusual noises from the transmission area
Gear shifting is delayed or jerky
In hybrid cars - problems with EV mode may occur

Causes

Open or short circuit in the pump control circuit
Auxiliary pump control module malfunction
Problems with module power or grounding
Mechanical failure of the pump itself
Software error in the control unit

How to Fix

Check the integrity of the wiring harness to the pump module
Check voltage and resistance in control circuit
Test the operation of the transmission fluid pump itself
Read extended trouble codes using a scanner
If necessary, replace the pump control module

Related codes

P0C24 P0C26 P0C23