B3886 - Trailer Right Tail Lamp Circuit

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

B3886 Possible Causes

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

How do I fix code B3886

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

B3886 02 Trailer Right Tail Lamp Circuit Short to Ground
B3886 04 Trailer Right Tail Lamp Circuit Open

Cost of diagnosing the B3886 code

Labor: 1.0

The cost of diagnosing the B3886 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)

B3886 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 right trailer tail lamp control circuit.
OBDII Code B3886 - Trailer Right Tail Lamp Circuit - AutoCodes.com

B3886 More Information

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