B1168 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1168 – Left Power Running Board Motor Circuit Short To Ground

 

B1168 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1168 Possible Causes

 

Faulty Power Running Board Motor Assembly,Power Running Board Motor Assembly harness is open or shorted,Power Running Board Motor Assembly circuit poor electrical connection,Faulty Power Running Board (PRB) Module

 

B1168 Description

 

During Power Running Board (PRB) deployment, the PRB module supplies power to the PRB motor and ground through the circuit. The PRB module stows the PRB by supplying power to the PRB motor and ground through the circuit. The PRB module provides a regulated 10-volt power supply to the Hall-effect sensor (internal to the PRB motor) through the circuit. The Hall-effect ground is provided by the PRB module through the circuit. The PRB module monitors the PRB Hall-effect signal through the circuit. If the PRB module does not receive any signal from the Hall-effect sensor during operation, the PRB will stop. The PRB module sets this Diagnostic Trouble Code (DTC) if a short to ground is detected in the motor circuit while attempting to retract/stow the LH running board.