B1621 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B1621 – Wiper Rear Low Limit Input Circuit Short To Battery

 

B1621 Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

B1621 Possible Causes

 

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

 

B1621 Description

 

The Body Control Module (BCM) monitors the Wiper Rear Low Limit. The BCM sets the OBDII code when the Wiper Rear Low Limit is not to factory specifications.