B1438 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1438 – Wiper Mode Select Switch Circuit Failure

 

B1438 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1438 Possible Causes

 

Faulty Wiper Mode Select Switch,Wiper Mode Select Switch harness is open or shorted,Wiper Mode Select Switch circuit poor electrical connection,Faulty Body Control Module (BCM)

 

B1438 Description

 

The Body Control Module (BCM) monitors the Wiper Mode Select Switch. The BCM sets the OBDII code when the Wiper Mode Select Switch is not to factory specifications.