B051C

Left Side Assist Step Position Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Left side assistant not working
The fault indicator lights up
The step does not extend or retract

Causes

Open or short circuit in the sensor circuit
Position sensor malfunction
Problems with the control unit

How to Fix

Check the integrity of wiring and connections
Check the functionality of the position sensor
Replace sensor if necessary
Check and reflash the control unit if necessary

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