Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.
B3885 02 Trailer Left Tail Lamp Circuit Short to Ground
B3885 04 Trailer Left Tail Lamp Circuit Open
To diagnose the B3885 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.
The Trailer Lighting Control Module receives a serial data message from the Body Control Module (BCM) indicating that the vehicle park lamps have been activated. The Trailer Lighting Control Module responds by applying battery voltage to the left and right trailer tail lamp control circuits illuminating the trailer tail lamps. The Diagnostic Trouble Code (DTC) sets when the Trailer Lighting Control Module detects a short to ground or an open/high resistance in the left trailer tail lamp control circuit.
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