B1521 Code: Meaning, Causes, and Symptoms | OBD2 Codes
B1521 – Hood Switch Circuit Short To Battery
B1521 Possible Symptoms
Engine Light ON (or Service Engine Soon Warning Light)
B1521 Possible Causes
Faulty Hood Switch,Hood Switch harness is open or shorted,Hood Switch circuit poor electrical connection,Faulty Body Control Module (BCM)
The Body Control Module (BCM) monitors the Hood Switch. The BCM sets the OBDII code when the Hood Switch is not to factory specifications.