AutoCodes – Cadillac – B2699 Cadillac

B2699 Cadillac Code - Right Headlamp Control Circuit

Quick Answer

When the Body Control Module (BCM) senses a request for low-beam headlamp illumination, the BCM sends a ground signal to the low-beam headlamp relay through the headlamp low-beam relay control circuit. Common causes include Faulty Right Low Beam Headlamp, Right Low Beam Headlamp harness is open or shorted, Right Low Beam Headlamp 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
B2699 Cadillac indicates Right Headlamp Control Circuit.
Common causes
Common causes include Faulty Right Low Beam Headlamp, Right Low Beam Headlamp harness is open or shorted, Right Low Beam Headlamp 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,412
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 26, 2023
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Code B2699 Cadillac Description

When the Body Control Module (BCM) senses a request for low-beam headlamp illumination, the BCM sends a ground signal to the low-beam headlamp relay through the headlamp low-beam relay control circuit. The headlamp low beam relay will apply voltage to illuminate the headlamps. The Diagnostic Trouble Code (DTC) sets when the BCM receives a command to illuminate the low beam headlamps and the headlamp low beam relay control circuit is open or shorted to voltage or when the BCM does not receive a command to illuminate the low beam headlamps and the headlamp low beam relay control circuit is shorted to ground.
OBDII Code B2699 Cadillac - Right Headlamp Control Circuit - AutoCodes.com
B2699 Cadillac Code - Right Headlamp Control Circuit

What are the Possible Causes of the DTC B2699 Cadillac?

  • Faulty Right Low Beam Headlamp
  • Right Low Beam Headlamp harness is open or shorted
  • Right Low Beam Headlamp circuit poor electrical connection
  • Faulty Low Beam Headlamp Relay
  • Faulty Body Control Module (BCM)

How to Fix the DTC B2699 Cadillac?

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2699 Cadillac 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 B2699 Cadillac code?

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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 B2699 Cadillac Code

1. What are common symptoms of OBDII code B2699 (Cadillac) related to the right headlamp control circuit?

- The common symptoms include the right headlamp not working, flickering, or behaving erratically.

2. What are the possible causes of OBDII code B2699 (Cadillac) indicating issues with the right headlamp control circuit?

- Possible causes may include a faulty headlamp control module, a damaged wiring harness, a defective headlamp bulb, or a problem with the vehicle's electrical system.

3. How can I diagnose the OBDII code B2699 (Cadillac) for the right headlamp control circuit?

- Diagnosis involves using a scan tool to retrieve the trouble code, inspecting the right headlamp components for visible damage, and testing the headlamp control module and related wiring for proper functionality.

4. Can I repair OBDII code B2699 (Cadillac) on my own?

- Depending on your automotive repair experience and the severity of the issue, you may be able to repair the right headlamp control circuit problem yourself by replacing faulty components or repairing damaged wiring.

5. Are there any quick fixes for OBDII code B2699 (Cadillac) before seeking professional help?

- Quick fixes may include checking and securing any loose connections, replacing a blown headlamp fuse, or resetting the vehicle's computer system by disconnecting the battery for a few minutes.

6. What should I do if the right headlamp continues to malfunction after clearing the OBDII code B2699 (Cadillac)?

- If the issue persists, it is recommended to seek assistance from a qualified mechanic or automotive technician to conduct a thorough inspection and diagnosis of the right headlamp control circuit.

7. How can I prevent OBDII code B2699 (Cadillac) from reoccurring in the future?

- To prevent the code from reoccurring, regular maintenance checks on the right headlamp system, such as checking for water damage, ensuring proper connections, and replacing worn-out components, are crucial.

8. Is it safe to drive with OBDII code B2699 (Cadillac) related to the right headlamp control circuit?

- It is not recommended to drive with a malfunctioning headlamp as it can compromise visibility and safety on the road, especially at night or in adverse weather conditions.

9. What is the typical cost to repair OBDII code B2699 (Cadillac) affecting the right headlamp control circuit?

- The cost of repair can vary depending on the specific issue, the labor rates of the repair shop, and the cost of any replacement parts needed, such as the headlamp control module or wiring harness.

10. Can OBDII code B2699 (Cadillac) affect other vehicle systems besides the right headlamp control circuit?

- While the code specifically relates to the right headlamp control circuit, electrical issues in one part of the vehicle can sometimes impact other systems, so it's important to address the problem promptly to prevent further complications.

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