B051C BUICK - Left Side Assist Step Position Sensor Circuit
Repair Importance Level:
Repair Difficulty Level:
B051C BUICK Possible Causes
- Faulty Left Side Assist Step Position Sensor
- Left Side Assist Step Position Sensor harness is open or shorted
- Left Side Assist Step Position Sensor circuit poor electrical connection
- Faulty Assist Step Control Module (ASC)
B051C BUICK Tech Notes
B051C 62 Left Side Assist Step Position Sensor Circuit Actuator Stuck OpenB051C 63 Left Side Assist Step Position Sensor Circuit Actuator Stuck Closed
B051C 02 Left Side Assist Step Position Sensor Circuit Short to Ground
B051C 29 Left Side Assist Step Position Sensor Circuit Too Few Pulses
B051C 01 Left Side Assist Step Position Sensor Circuit Short to Battery
B051C 2A Left Side Assist Step Position Sensor Circuit Too Many Pulses
B051C 22 Left Side Assist Step Position Sensor Circuit Low Time < Minimum
Cost of diagnosing the B051C BUICK code
Labor: 1.0
The cost of diagnosing the B051C BUICK code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.B051C BUICK Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B051C BUICK 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.