C009A

4WD/AWD Rear Differential Unit Actuator A Position Sensor B

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
All-wheel drive system failure
Unstable transmission operation
Loss of traction on the rear axle

Causes

Position sensor malfunction
Open or short circuit in wiring harness
Poor contact in connectors
Mechanical fault in differential drive
Problems with the control unit

How to Fix

Check sensor connection and connectors
Check the voltage and resistance of the sensor
Inspect the wiring harness for damage
If necessary, replace the position sensor
Clean or replace differential drive

Related codes

C009B C0099 C008A C008B