Engine-CodesRAM – B1667 RAM

B1667 RAM Code - Reverse Lamp Control Circuit Low

Quick Answer

The B1667 diagnostic trouble code (DTC) indicates a problem with the Reverse Lamp Control Circuit being detected as low. Common causes include Faulty reverse lamp switch: A malfunctioning reverse lamp switch can prevent the reverse lights from turning on when the vehicle is shifted into reverse gear, Wiring issues: Damaged or corroded wiring in the reverse lamp control circuit can cause a low voltage condition and trigger the B1667 code, Blown fuse: A blown fuse in the reverse lamp circuit can disrupt the flow of electricity and result in the code being set. 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
B1667 RAM indicates Reverse Lamp Control Circuit Low.
Common causes
Common causes include Faulty reverse lamp switch: A malfunctioning reverse lamp switch can prevent the reverse lights from turning on when the vehicle is shifted into reverse gear, Wiring issues: Damaged or corroded wiring in the reverse lamp control circuit can cause a low voltage condition and trigger the B1667 code, Blown fuse: A blown fuse in the reverse lamp circuit can disrupt the flow of electricity and result in the code being set.
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.
Table of contents Created and updated by William Orellana on Sep 18, 2024
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Code B1667 RAM Description

The B1667 diagnostic trouble code (DTC) indicates a problem with the Reverse Lamp Control Circuit being detected as low. This code is typically found in vehicles with automatic transmission systems. The reverse lamp control circuit is responsible for activating the reverse lights when the vehicle is shifted into reverse gear. When this circuit is detected as low, it means that the voltage level in the circuit is below the specified threshold, which can prevent the reverse lights from functioning properly.

OBDII Code B1667 RAM - Reverse Lamp Control Circuit Low
B1667 RAM Code - Reverse Lamp Control Circuit Low

Common Causes of B1667 RAM

  1. Faulty reverse lamp switch: A malfunctioning reverse lamp switch can prevent the reverse lights from turning on when the vehicle is shifted into reverse gear.
  2. Wiring issues: Damaged or corroded wiring in the reverse lamp control circuit can cause a low voltage condition and trigger the B1667 code.
  3. Blown fuse: A blown fuse in the reverse lamp circuit can disrupt the flow of electricity and result in the code being set.
  4. Faulty body control module: The body control module (BCM) is responsible for controlling various electrical functions in the vehicle, including the reverse lamp control circuit. A faulty BCM can lead to the B1667 code.

Symptoms of B1667 RAM

  1. Reverse lights not working: The most obvious symptom of the B1667 code is that the reverse lights will not illuminate when the vehicle is shifted into reverse gear.
  2. Difficulty in seeing behind the vehicle: Without functioning reverse lights, it can be challenging for the driver to see behind the vehicle when backing up, especially in low-light conditions.
  3. Warning message on the dashboard: Some vehicles may display a warning message on the dashboard indicating an issue with the reverse lamp control circuit.
  4. Failed state inspection: In some regions, a vehicle with non-functioning reverse lights may fail the state inspection, leading to legal consequences.

How to Fix B1667 RAM

  1. Diagnose the issue: Use a diagnostic scanner to retrieve the B1667 code and perform a thorough inspection of the reverse lamp control circuit to identify the root cause of the problem.
  2. Check the reverse lamp switch: Test the reverse lamp switch for proper operation and replace it if necessary.
  3. Inspect the wiring: Check the wiring in the reverse lamp control circuit for any damage or corrosion. Repair or replace any faulty wiring as needed.
  4. Check the fuse: Inspect the fuse related to the reverse lamp circuit and replace it if it is blown.
  5. Test the body control module: If all other components check out, test the body control module for proper function and replace it if it is determined to be faulty.

Cost to Fix B1667 RAM

The cost of repairing the B1667 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the cost of parts for this repair can range from $50 to $200, while the labor cost can range from $100 to $300. Overall, the total repair cost for addressing the B1667 code is typically between $150 and $500. It is important to note that these are rough estimates, and actual costs may differ based on various factors. It is recommended to consult with a professional mechanic to get an accurate quote for the repair.

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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 B1667 RAM Code

1. What are the common symptoms of OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- Common symptoms include non-functioning reverse lights, dim or flickering reverse lights, or a dashboard warning light indicating an issue with the reverse lamp circuit.

2. What are the possible causes of OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- Possible causes include a faulty reverse lamp bulb, damaged wiring or connectors in the reverse lamp circuit, a defective reverse lamp switch, or a problem with the body control module.

3. How can I diagnose the cause of OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- You can start by visually inspecting the reverse lamp bulb, wiring, and connectors for any visible damage. Using a multimeter, test the continuity of the circuit and check the reverse lamp switch for proper functionality.

4. Can I still drive my vehicle with OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- While driving with this code may not affect the performance of the vehicle, it is important to address the issue promptly to ensure the safety of yourself and others on the road.

5. How can I repair OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- Repair methods may include replacing the faulty reverse lamp bulb, repairing damaged wiring or connectors, replacing the reverse lamp switch, or reprogramming the body control module if necessary.

6. Are there any DIY tips for resolving OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- DIY enthusiasts can start by checking and replacing the reverse lamp bulb, inspecting and repairing any damaged wiring, and testing the reverse lamp switch before seeking professional assistance.

7. Is it necessary to clear the OBDII code B1667 RAM - Reverse Lamp Control Circuit Low after making repairs?

- Yes, it is recommended to clear the code using an OBDII scanner after resolving the issue to reset the system and ensure that the repair was successful.

8. How much can I expect to pay for repairing OBDII code B1667 RAM - Reverse Lamp Control Circuit Low at a mechanic?

- The cost of repairs can vary depending on the exact cause of the issue, but you can expect to pay anywhere from $50 to $200 for parts and labor, excluding diagnostic fees.

9. What tools may be needed to diagnose and repair OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- Common tools needed include a multimeter for testing continuity, a set of basic hand tools for accessing components, an OBDII scanner for code retrieval and clearing, and a repair manual for reference.

10. Are there any recalls or technical service bulletins related to OBDII code B1667 RAM - Reverse Lamp Control Circuit Low?

- It's recommended to check with your vehicle manufacturer or authorized dealer for any recalls or technical service bulletins related to this specific OBDII code to see if your vehicle is eligible for free repairs or assistance.

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