P27A2

Electric/Auxiliary Transmission Fluid Pump B Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes 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 control circuit
Pump solenoid valve malfunction
Wiring harness damage
Fuse or relay failure
Malfunction of the transmission fluid pump itself

How to Fix

Check control circuit fuses and relays
Inspect the wiring harness and connectors for damage.
Check the resistance of the pump winding
Diagnose the operation of the solenoid valve
If necessary, replace the transmission fluid pump

Related codes

P27A0 P27A1 P27A3