P09A1

Shift Solenoid H Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–56 (est.)

Symptoms

Incorrect gear shifting
Transmission of the gearbox into emergency mode
Check Engine light comes on
Reduced vehicle dynamics
Increased fuel consumption

Causes

Solenoid H control circuit open
Short circuit in the circuit
Solenoid H fault
Poor contact in solenoid connector
Transmission control module (TCM) problems

How to Fix

Check continuity of solenoid H control circuit
Check the resistance of solenoid H
Inspect connectors and contacts for corrosion
If necessary, replace solenoid H
Check the operation of the transmission control unit

Related codes

P09A0 P09A2 P0750