AutoCodes – Chevrolet – B3885 Chevrolet

B3885 Chevrolet Code - Trailer Left Tail Lamp Circuit

Quick Answer

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. Common causes include Faulty Trailer Left Tail Lamp, Trailer Left Tail Lamp harness is open or shorted, Trailer Left Tail Lamp circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B3885 Chevrolet indicates Trailer Left Tail Lamp Circuit.
Common causes: Common causes include Faulty Trailer Left Tail Lamp, Trailer Left Tail Lamp harness is open or shorted, Trailer Left Tail Lamp circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,014

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 23, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B3885 Chevrolet 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 Chevrolet - Trailer Left Tail Lamp Circuit - AutoCodes.com — B3885 Chevrolet Code - Trailer Left Tail Lamp Circuit

What does this mean?

What are the Possible Causes of the DTC B3885 Chevrolet?

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 to Fix the DTC B3885 Chevrolet?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3885 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need Help with the Code?

Get the B3885 Chevrolet code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B3885 Chevrolet Code

1. What are common symptoms of OBDII code B3885 in a Chevrolet related to the Trailer Left Tail Lamp Circuit?

- Common symptoms include the trailer left tail lamp not functioning properly, flickering, or remaining dim.

2. What are some possible causes of OBDII code B3885 in a Chevrolet?

- Possible causes include a faulty trailer left tail lamp assembly, damaged wiring, a blown fuse, or a defective trailer connector.

3. How can I diagnose the issue related to OBDII code B3885 in my Chevrolet?

- You can start by inspecting the trailer left tail lamp for any visible damage, checking the wiring for continuity, and testing the trailer connector for proper connection.

4. Can a blown fuse cause OBDII code B3885 to appear in a Chevrolet?

- Yes, a blown fuse related to the trailer left tail lamp circuit can trigger OBDII code B3885 in a Chevrolet.

5. What repair tips can help resolve OBDII code B3885 in a Chevrolet?

- Repair tips include replacing the faulty trailer left tail lamp assembly, repairing damaged wiring, replacing blown fuses, and ensuring a secure connection at the trailer connector.

6. Is it safe to continue driving my Chevrolet with OBDII code B3885 related to the Trailer Left Tail Lamp Circuit?

- It is not recommended to drive with malfunctioning trailer left tail lamps as it can pose a safety hazard, especially during low visibility conditions.

7. Can weather conditions affect the functionality of the trailer left tail lamp circuit in a Chevrolet triggering OBDII code B3885?

- Yes, extreme weather conditions like heavy rain or snow can lead to water damage or corrosion in the trailer left tail lamp circuit, causing OBDII code B3885 to appear.

8. Are there any specific Chevrolet models known to be more prone to experiencing OBDII code B3885 for the Trailer Left Tail Lamp Circuit?

- While this code can occur in various Chevrolet models with trailer wiring, certain models with extensive towing capabilities may be more susceptible.

9. How can I prevent OBDII code B3885 from recurring in my Chevrolet in the future?

- Regularly inspecting and maintaining the trailer left tail lamp circuit, ensuring proper wiring connections, and using high-quality trailer components can help prevent the recurrence of this code.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code B3885 in a Chevrolet themselves?

- Yes, individuals with basic automotive knowledge can attempt to diagnose and repair OBDII code B3885 related to the Trailer Left Tail Lamp Circuit, but caution and attention to detail are essential.