B3886 Code - Trailer Right 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 Right Tail Lamp, Trailer Right Tail Lamp harness is open or shorted, Trailer Right 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
- B3886 indicates Trailer Right Tail Lamp Circuit.
- Common causes
- Common causes include Faulty Trailer Right Tail Lamp, Trailer Right Tail Lamp harness is open or shorted, Trailer Right 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.
Code B3886 Description
What are the Possible Causes of the DTC B3886?
- 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 to Fix the DTC B3886?
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.
Code Tech Notes
B3886 04 Trailer Right Tail Lamp Circuit Open
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B3886 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.
Need more information about the B3886 code?
Need more information on how to fix the B3886 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B3886 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- B3886 Buick — Trailer Right Tail Lamp Circuit
- B3886 Cadillac — Trailer Right Tail Lamp Circuit
- B3886 Chevrolet — Trailer Right Tail Lamp Circuit
- B3886 GMC — Trailer Right Tail Lamp Circuit
Frequently Asked Questions about B3886 Code
1. What are common symptoms of OBDII code B3886 (Trailer Right Tail Lamp Circuit)?
- Common symptoms include the right trailer tail lamp not working, a warning light on the dashboard, or a notification of a lamp malfunction.
2. What are possible causes of OBDII code B3886?
- Possible causes of this code include a faulty trailer right tail lamp, wiring issues, a blown fuse, or a malfunctioning control module.
3. How can I diagnose the issue related to OBDII code B3886?
- You can start by visually inspecting the trailer right tail lamp, checking the wiring connections, testing the fuse, and using a multimeter to check for power at various points in the circuit.
4. Can I still drive my vehicle with OBDII code B3886?
- It is generally safe to drive the vehicle with this code, but it is important to address the issue promptly to ensure proper functioning of the trailer right tail lamp.
5. How can I repair OBDII code B3886?
- Repairing this code may involve replacing the trailer right tail lamp, repairing or replacing damaged wiring, checking and replacing any blown fuses, or reprogramming the control module if necessary.
6. Can a DIY enthusiast fix OBDII code B3886?
- Depending on their skill level and access to tools, a DIY enthusiast may be able to fix this code by following repair guides, using a multimeter, and being cautious when working with electrical components.
7. Is it possible for OBDII code B3886 to be a false alarm?
- Sometimes this code can be triggered by temporary issues or glitches. Clearing the code and monitoring the trailer right tail lamp for any further problems can help determine if it was a false alarm.
8. Are there any safety concerns associated with OBDII code B3886?
- While the code itself may not pose immediate safety risks, having non-functional trailer tail lamps can reduce visibility and increase the risk of accidents, especially when towing a trailer.
9. How much does it typically cost to repair OBDII code B3886?
- The cost of repairing this code can vary depending on the specific issue, but it may range from replacing a bulb or fuse to more extensive repairs involving wiring or components, potentially costing anywhere from $50 to $200 or more.
10. Can OBDII code B3886 affect the overall performance of my vehicle?
- While this code specifically relates to the trailer right tail lamp circuit, addressing and resolving it promptly is important to maintain the overall safety and functionality of your vehicle's lighting system.
Discuss the causes and fixes for B3886 OBDII Code
Code B3886 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
