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Engine-Codes - Cadillac - B051D CADILLAC

B051D CADILLAC - Right Side Assist Step Position Sensor Circuit

Repair Importance Level: 1/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

B051D CADILLAC Possible Causes

What does this mean?
  • Faulty Right Side Assist Step Position Sensor
  • Right Side Assist Step Position Sensor harness is open or shorted
  • Right Side Assist Step Position Sensor circuit poor electrical connection
  • Faulty Assist Step Control Module (ASC)

How is the B051D CADILLAC code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

What does this mean?
B051D 62 Right Side Assist Step Position Sensor Circuit Actuator Stuck Open
B051D 63 Right Side Assist Step Position Sensor Circuit Actuator Stuck Closed
B051D 29 Right Side Assist Step Position Sensor Circuit Too Few Pulses
B051D 2A Right Side Assist Step Position Sensor Circuit Too Many Pulses
B051D 22 Right Side Assist Step Position Sensor Circuit Low Time < Minimum

What is the cost to diagnose the B051D CADILLAC code

Labor: 1.0

The cost to diagnose the B051D CADILLAC code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B051D CADILLAC Meaning

The Assist Step Control Module (ASC) controls the running board actuators to extend or retract the running boards. Each actuator consists of an electric motor and a potentiometer. The module supplies a low reference and 10-volt reference source voltage to the potentiometer. The ASC control module monitors the voltage drop across the potentiometer on the position signal circuit. When the actuator shaft rotates, the voltage on the position signal circuit changes. The ASC control module supplies the actuator motor with a 12-volt control circuit and a ground control circuit. The ASC module controls the direction of the actuator by changing the polarity of the control circuits.

More Information

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