B051D

Right Side Assist Step Position Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Side step does not extend automatically
Intermittent stage operation
The system issues a warning on the instrument panel
Step gets stuck in one position

Causes

Broken or damaged wiring to the sensor
Malfunction of the position sensor itself
Corrosion of contacts in connectors
Problems with the system control unit
Mechanical damage to stage or sensor

How to Fix

Conduct a visual inspection of wiring and connectors
Check sensor resistance (compare with nominal values)
Scan the control unit for additional errors
If necessary, replace the position sensor
Clean contacts and treat with protective compound
Check the operation of the system after repair

Related codes

B051E B051F B0520