C0397 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C0397 – Transfer Case Clutch/Transfer Case Range Position Sensor

 

C0397 Possible Symptoms

 

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

 

C0397 Possible Causes

 

Faulty Transfer Case Clutch/Transfer Case Range Position Sensor,Transfer Case Clutch/Transfer Case Range Position Sensor harness is open or shorted,Transfer Case Clutch/Transfer Case Range Position Sensor circuit poor electrical connection

 

C0397 Description

 

In 4WD/AWD Automatic range, the transfer case control module monitors the front and rear wheel speed sensors for slip. If the transfer case control module detects slip, and is unable to correct for a difference between the front and rear speed sensors, it will command the transfer case to apply the clutch. In addition, the transfer case control module tests for clutch pack wear by performing a high side kiss point check at power down and comparing it to the transfer case range actuator position sensor reading.