P0C29

Electric/Auxiliary Transmission Fluid Pump A Driver Circuit Performance

Severity

🔴 High

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–278 (est.)

Symptoms

Check Engine Light Is On
Gear shifting problems
Transmission transition to emergency mode
Unusual noises from the transmission area
Reduced transmission efficiency

Causes

Open or short circuit in the pump circuit
Pump motor malfunction
Relay or fuse problems
Transmission control unit malfunction
Low transmission fluid level

How to Fix

Check the level and condition of the transmission fluid
Check the integrity of the wiring and connections of the pump
Test the operation of the pump motor
Check pump circuit relays and fuses
Scan the transmission control unit for errors

Related codes

P0C2A P0C2B P0C2C