C1858 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1858 – Differential Fluid Pressure


C1858 Possible Symptoms


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


C1858 Possible Causes


Faulty Differential Solenoid Valve,Faulty Differential Fluid Pressure Sensor,Differential Fluid Pressure Sensor harness is open or shorted,Differential Fluid Pressure Sensor circuit poor electrical connection


C1858 Description


The AWD Control Unit monitors the Differential Fluid Pressure. The AWD Control Unit sets the OBDII code when the Differential Fluid Pressure is not to factory specifications.