B3885 - Trailer Left Tail Lamp Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
Table of contents

B3885 Possible Causes

  • Faulty Trailer Left Tail Lamp
  • Trailer Left Tail Lamp harness is open or shorted
  • Trailer Left Tail Lamp circuit poor electrical connection
  • Faulty Trailer Lighting Control Module

How do I fix code B3885

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

B3885 02 Trailer Left Tail Lamp Circuit Short to Ground
B3885 04 Trailer Left Tail Lamp Circuit Open

Cost of diagnosing the B3885 code

Labor: 1.0

The cost of diagnosing the B3885 code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

B3885 Description

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.
OBDII Code B3885 - Trailer Left Tail Lamp Circuit - AutoCodes.com

B3885 More Information

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