Engine-CodesRAM – B1659 RAM

B1659 RAM Code - Front Fog Lamp Control Circuit Low

Quick Answer

The B1659 diagnostic trouble code (DTC) refers to a fault in the front fog lamp control circuit, specifically indicating that the circuit is experiencing low voltage. Common causes include Faulty front fog lamp bulbs or sockets, Wiring issues such as frayed or damaged wires in the front fog lamp circuit, Faulty front fog lamp switch or control module. 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
B1659 RAM indicates Front Fog Lamp Control Circuit Low.
Common causes
Common causes include Faulty front fog lamp bulbs or sockets, Wiring issues such as frayed or damaged wires in the front fog lamp circuit, Faulty front fog lamp switch or control module.
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 B1659 RAM Description

The B1659 diagnostic trouble code (DTC) refers to a fault in the front fog lamp control circuit, specifically indicating that the circuit is experiencing low voltage. This code is typically triggered when the power supply to the front fog lamps falls below the specified threshold, leading to the lamps not functioning properly or not turning on at all. The front fog lamps are designed to improve visibility in adverse weather conditions such as fog, rain, or snow, enhancing the driver's ability to see and be seen by other vehicles on the road.

OBDII Code B1659 RAM - Front Fog Lamp Control Circuit Low
B1659 RAM Code - Front Fog Lamp Control Circuit Low

Common Causes of B1659 RAM

  1. Faulty front fog lamp bulbs or sockets.
  2. Wiring issues such as frayed or damaged wires in the front fog lamp circuit.
  3. Faulty front fog lamp switch or control module.
  4. Corrosion or poor connections in the front fog lamp circuit.
  5. Issues with the vehicle's battery or charging system affecting the voltage supply to the front fog lamps.

Symptoms of B1659 RAM

  1. Front fog lamps not turning on or functioning intermittently.
  2. Dashboard warning light indicating a fault with the front fog lamp system.
  3. Dim or flickering front fog lamps.
  4. Electrical issues such as blown fuses related to the front fog lamp circuit.
  5. Reduced visibility in low-light conditions due to non-functional front fog lamps.

How to Fix B1659 RAM

  1. Begin by visually inspecting the front fog lamp bulbs, sockets, and wiring for any visible damage or corrosion. Replace any faulty components as needed.
  2. Check the front fog lamp switch and control module for proper operation. Test the switch for continuity and ensure that the control module is receiving the correct signals.
  3. Use a multimeter to test the voltage supply to the front fog lamps. Check for proper voltage levels and troubleshoot any issues with the vehicle's electrical system.
  4. Inspect the front fog lamp circuit for any loose connections or damaged wiring. Repair or replace any faulty wiring to ensure a secure connection.
  5. Clear the DTC from the vehicle's onboard diagnostic system using a scan tool after completing the repairs to reset the system and verify that the issue has been resolved.

Cost to Fix B1659 RAM

The typical repair costs for addressing the B1659 code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing front fog lamp bulbs or sockets may cost between $50 to $100, while addressing wiring issues or faulty components such as the switch or control module could range from $100 to $300 or more. Labor costs at auto repair shops typically range between $80 and $150 per hour, with rates varying based on location and shop rates. It is advisable to consult with a qualified mechanic or technician to obtain a more accurate estimate based on the specific circumstances of the vehicle.

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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 B1659 RAM Code

1. What are the common symptoms of OBDII code B1659 RAM related to the Front Fog Lamp Control Circuit Low?

- Common symptoms include the front fog lamps not turning on, flickering, or staying on constantly.

2. What are the possible causes of OBDII code B1659 RAM indicating a Front Fog Lamp Control Circuit Low?

- Possible causes include a faulty fog lamp switch, damaged wiring or connectors, a defective fog lamp relay, or a problem with the fog lamp bulbs.

3. How can I diagnose the Front Fog Lamp Control Circuit Low issue related to OBDII code B1659 RAM?

- You can diagnose the issue by checking the fog lamp bulbs for proper operation, inspecting the wiring and connectors for damage, testing the fog lamp switch, and verifying the functionality of the fog lamp relay.

4. What are some tips for repairing OBDII code B1659 RAM associated with the Front Fog Lamp Control Circuit Low?

- Repair tips include replacing any faulty fog lamp bulbs, repairing damaged wiring or connectors, replacing a defective fog lamp switch or relay, and ensuring proper grounding of the fog lamp circuit.

5. Can a DIY enthusiast repair OBDII code B1659 RAM for the Front Fog Lamp Control Circuit Low?

- Depending on your experience and tools, you may be able to repair the issue yourself by following a detailed repair manual or guide specific to your vehicle model.

6. Is it safe to continue driving with OBDII code B1659 RAM indicating a Front Fog Lamp Control Circuit Low?

- It is generally safe to continue driving, but it is recommended to address the issue promptly to ensure proper functioning of the front fog lamps, especially in low visibility conditions.

7. How can I reset the OBDII code B1659 RAM for the Front Fog Lamp Control Circuit Low after making repairs?

- You can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes to clear the code from the system.

8. Are there any specific vehicle models known to have frequent issues with OBDII code B1659 RAM related to the Front Fog Lamp Control Circuit Low?

- While this code can occur in various vehicle models, some makes and models may have known issues with the front fog lamp circuit, so it's worth checking forums or contacting a dealership for specific information.

9. What is the typical cost to repair OBDII code B1659 RAM associated with the Front Fog Lamp Control Circuit Low at a professional auto repair shop?

- The cost of repair can vary depending on the extent of the issue and the labor rates of the repair shop, but it may involve a few hours of labor plus the cost of any replacement parts needed.

10. How can I prevent OBDII code B1659 RAM from reoccurring in the future after repairing the Front Fog Lamp Control Circuit Low issue?

- To prevent recurrence, make sure to use high-quality replacement parts, properly secure wiring and connectors, and perform regular maintenance checks on the front fog lamp circuit to catch any potential issues early.

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