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Engine-Codes – RAM – B1647 RAM

B1647 RAM Code - Rear Right Turn Control Circuit Low

Quick Answer

The B1647 diagnostic trouble code (DTC) indicates a problem with the rear right turn control circuit in the vehicle. Common causes include Faulty wiring or connectors in the rear right turn control circuit, A burned-out or damaged rear right turn signal bulb, Malfunctioning turn signal switch. 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
B1647 RAM indicates Rear Right Turn Control Circuit Low.
Common causes
Common causes include Faulty wiring or connectors in the rear right turn control circuit, A burned-out or damaged rear right turn signal bulb, Malfunctioning turn signal switch.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 19, 2024
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Code B1647 RAM Description

The B1647 diagnostic trouble code (DTC) indicates a problem with the rear right turn control circuit in the vehicle. This code specifically points to a low voltage condition in the circuit, which can prevent the proper operation of the rear right turn signal. The turn control circuit is responsible for sending signals to the rear right turn signal light, allowing it to illuminate when the turn signal is activated. When the voltage in the circuit is low, the turn signal may not function correctly, leading to potential safety hazards on the road.

OBDII Code B1647 RAM - Rear Right Turn Control Circuit Low
B1647 RAM Code - Rear Right Turn Control Circuit Low

Common Causes of B1647 RAM

  1. Faulty wiring or connectors in the rear right turn control circuit.
  2. A burned-out or damaged rear right turn signal bulb.
  3. Malfunctioning turn signal switch.
  4. Issues with the body control module affecting the turn signal operation.

Symptoms of B1647 RAM

  1. Rear right turn signal not illuminating or flashing dimly.
  2. Rapid blinking of the turn signal indicator on the dashboard.
  3. Turn signal on the rear right side staying on constantly.
  4. Turn signal on the rear right side not working at all.

How to Fix B1647 RAM

  1. Begin by inspecting the rear right turn signal bulb to ensure it is not burned out or damaged. Replace the bulb if necessary.
  2. Check the wiring and connectors in the rear right turn control circuit for any signs of damage or corrosion. Repair or replace any faulty components.
  3. Test the turn signal switch to determine if it is functioning correctly. Replace the switch if it is found to be faulty.
  4. If the issue persists, diagnose the body control module for any faults related to the turn signal operation. Replace or reprogram the module as needed.

Cost to Fix B1647 RAM

The typical repair costs for addressing a B1647 code related to the rear right turn control circuit low voltage issue can range from $100 to $300, depending on the specific cause of the problem and the labor rates at the auto repair shop. It's important to note that diagnosis time and labor rates can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, the cost of any replacement parts needed for the repair will also contribute to the overall cost.

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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 B1647 RAM Code

1. What are the common symptoms of OBDII code B1647 RAM (Rear Right Turn Control Circuit Low)?

- Common symptoms include a non-functioning right rear turn signal, rapid flashing of the turn signal, or a warning light on the dashboard.

2. What are the possible causes of OBDII code B1647 RAM?

- The code B1647 RAM can be triggered by issues such as a faulty turn signal bulb, a problem with the wiring harness, a defective turn signal switch, or a malfunctioning control module.

3. How can I diagnose the OBDII code B1647 RAM?

- To diagnose this code, you can start by visually inspecting the right rear turn signal bulb and its wiring. You can also use a multimeter to check for continuity in the circuit and test the turn signal switch for proper functioning.

4. What are some tips for repairing OBDII code B1647 RAM?

- Start by replacing the right rear turn signal bulb to see if that resolves the issue. If the problem persists, carefully inspect the wiring harness for any damage or loose connections. If necessary, consult a professional mechanic for further diagnosis and repair.

5. Can I drive my vehicle with the OBDII code B1647 RAM illuminated?

- It is not advisable to drive your vehicle with the OBDII code B1647 RAM triggered, as it indicates a malfunction in the right rear turn signal circuit. This can pose a safety hazard to you and other drivers on the road.

6. How much does it typically cost to repair OBDII code B1647 RAM?

- The cost of repairing OBDII code B1647 RAM can vary depending on the underlying cause of the issue. Simple fixes like replacing a turn signal bulb may be relatively inexpensive, while more complex wiring or module issues can be more costly.

7. Can I reset the OBDII code B1647 RAM on my own?

- Yes, you can reset the OBDII code B1647 RAM using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to address the root cause of the code to prevent it from reoccurring.

8. Will OBDII code B1647 RAM affect my vehicle's performance?

- While OBDII code B1647 RAM may not directly impact your vehicle's performance, it can lead to safety concerns due to a non-functioning turn signal. It is best to address the issue promptly to ensure proper signaling while driving.

9. Is OBDII code B1647 RAM a common issue in certain vehicle makes and models?

- The occurrence of OBDII code B1647 RAM can vary among different vehicle makes and models. However, it is a relatively common issue related to turn signal circuitry in many vehicles.

10. How long does it typically take to repair OBDII code B1647 RAM?

- The repair time for OBDII code B1647 RAM can vary depending on the complexity of the issue. Simple fixes like bulb replacement can be done quickly, while more involved repairs may take longer and require professional assistance.

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