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)
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.