AutoCodes – Generic – B1799

B1799 Code - Lamp Turn Signal Front Output Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Lamp Turn Signal. Common causes include Faulty Lamp Turn Signal, Lamp Turn Signal harness is open or shorted, Lamp Turn Signal 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: B1799 indicates Lamp Turn Signal Front Output Circuit Open.
Common causes: Common causes include Faulty Lamp Turn Signal, Lamp Turn Signal harness is open or shorted, Lamp Turn Signal 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 6,227

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 Jul 01, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1799 Description

The Body Control Module (BCM) monitors the Lamp Turn Signal. The BCM sets the OBDII code when the Lamp Turn Signal is not to factory specifications.

OBDII Code B1799 - Lamp Turn Signal Front Output Circuit Open - AutoCodes.com — B1799 Code - Lamp Turn Signal Front Output Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1799?

Faulty Lamp Turn Signal
Lamp Turn Signal harness is open or shorted
Lamp Turn Signal circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1799?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1799 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 B1799 code?

Need more information on how to fix the B1799 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1799 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 B1799 Code

1. What are the common symptoms of OBDII code B1799 (Lamp Turn Signal Front Output Circuit Open)?

- The common symptoms include the front turn signal light not functioning properly or not illuminating at all.

2. What are the possible causes of OBDII code B1799?

- The code B1799 is typically caused by a broken or damaged wire in the front turn signal circuit, a faulty turn signal bulb, or a malfunctioning turn signal switch.

3. How can I diagnose the issue related to OBDII code B1799?

- You can start by visually inspecting the front turn signal bulb, checking the wiring harness for any visible damage, and testing the turn signal switch for proper functionality.

4. Can a DIY enthusiast repair OBDII code B1799 at home?

- Yes, depending on the cause of the issue, DIY enthusiasts can repair this code by replacing a faulty turn signal bulb, repairing damaged wiring, or replacing a defective turn signal switch.

5. Is it safe to drive with OBDII code B1799 present?

- It is not recommended to drive with OBDII code B1799 present as it affects the visibility of your vehicle to other drivers, potentially causing safety hazards on the road.

6. Will resetting the OBDII code B1799 turn off the dashboard warning light?

- Resetting the code may temporarily turn off the dashboard warning light, but if the underlying issue is not fixed, the code is likely to reappear, and the warning light will illuminate again.

7. Can extreme weather conditions cause OBDII code B1799 to trigger?

- Yes, extreme weather conditions like heavy rain or snow can sometimes lead to water damage in the turn signal circuit, resulting in the OBDII code B1799 being triggered.

8. What is the typical cost to repair OBDII code B1799 at a professional auto repair shop?

- The cost of repairing OBDII code B1799 can vary depending on the cause of the issue and the labor rates of the repair shop, but it can range from $100 to $300 on average.

9. Are there any preventive maintenance tips to avoid OBDII code B1799 in the future?

- Regularly inspecting your vehicle's exterior lights, promptly replacing any burnt-out bulbs, and addressing any wiring issues can help prevent OBDII code B1799 from occurring.

10. Can OBDII code B1799 affect other electrical systems in the vehicle?

- While OBDII code B1799 specifically relates to the front turn signal circuit, electrical issues in one part of the vehicle can sometimes impact other systems, so it's essential to address the problem promptly.