B21F9 CHRYSLER – Exterior Lighting Power Supply Input 2 Circuit Open

B21F9 CHRYSLER Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

B21F9 CHRYSLER Possible Causes

Blown Exterior Lighting Fuse,Exterior Lighting Fuse harness is open or shorted,Exterior Lighting Fuse circuit poor electrical connection,Faulty Body Control Module (BCM)

B21F9 CHRYSLER Description

The Body Control Module (BCM) monitors the Exterior Lighting Power Supply Input 2 Circuit. The BCM sets the OBDII code when it detects less than 1.0 volt on the Fused B(+) circuit.