Conditions for Setting the DTC

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

DTC B3948 01, B3948 04

Left Front - Turn Signal Lamps - Control Circuit = Open/High Resistance
Left Front - Turn Signal Lamps - Ground circuit = Open/High Resistance
F35UA - B+ = Short to Ground/Open/High Resistance

DTC B3948 02

Left Front - Turn Signal Lamps - Control Circuit = Short to Ground

DTC B3949 01, B3949 04

Right Front - Turn Signal Lamps - Control Circuit = Open/High Resistance
Right Front - Turn Signal Lamps - Ground circuit = Open/High Resistance
F8DA - B+ = Short to Ground/Open/High Resistance

B3949 02

Right Front - Turn Signal Lamps - Control Circuit = Short to Ground