C1855 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1855 – Acceleration Position Sensor Conflict


C1855 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1855 Possible Causes


Faulty Acceleration Position Sensor,Acceleration Position Sensor harness is open or shorted,Acceleration Position Sensor circuit poor electrical connection


C1855 Description


The Anti-Lock Brake System (ABS) Module monitors the Acceleration Position Sensor. The ABS Module sets the OBDII code when the Acceleration Position Sensor is not to factory specifications.