P09A3

Gate Select Position Circuit B Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Incorrect gear shifting
Transmission of the gearbox into emergency mode
Check Engine Light Illuminates
Reduced vehicle dynamics

Causes

Gate position sensor fault B
Wiring harness damage
Solenoid valve problems
Mechanical fault in the gearbox
Problems with the transmission control unit

How to Fix

Check gate position sensor B
Inspect the wiring harness for damage
Check solenoid valves
Diagnose the mechanical part of the gearbox
Check transmission control unit

Related codes

P09A1 P09A2 P09A4