Engine-CodesJeep – B1647 Jeep

B1647 Jeep Code - Rear Right Turn Control Circuit Low

Quick Answer

The B1647 code for Jeep vehicles indicates a problem with the rear right turn control circuit being detected as low. Common causes include Faulty turn signal bulb, Damaged wiring harness, 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 Jeep indicates Rear Right Turn Control Circuit Low.
Common causes
Common causes include Faulty turn signal bulb, Damaged wiring harness, 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.
Table of contents Created and updated by William Orellana on Sep 23, 2024
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Code B1647 Jeep Description

The B1647 code for Jeep vehicles indicates a problem with the rear right turn control circuit being detected as low. This means that there is an issue with the electrical circuit that controls the right turn signal at the rear of the vehicle. The turn signal system is crucial for indicating to other drivers your intention to turn or change lanes, so any malfunction in this system can compromise the safety of your vehicle.

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

Common Causes of B1647 Jeep

  1. Faulty turn signal bulb
  2. Damaged wiring harness
  3. Malfunctioning turn signal switch
  4. Problem with the body control module

Symptoms of B1647 Jeep

  1. Right rear turn signal not illuminating
  2. Rapid blinking of the right turn signal
  3. Turn signal indicator on the dashboard staying lit
  4. Turn signal not turning off after completing a turn

How to Fix B1647 Jeep

  1. Begin by visually inspecting the right rear turn signal bulb to check for any signs of damage or burnout. Replace the bulb if necessary.
  2. Inspect the wiring harness connected to the right rear turn signal for any frayed wires or loose connections. Repair or replace the wiring as needed.
  3. Test the turn signal switch to ensure it is functioning correctly. Replace the switch if it is found to be faulty.
  4. If the issue persists, have the body control module scanned for any error codes related to the turn signal circuit. Replace or reprogram the module if necessary.

Cost to Fix B1647 Jeep

The typical repair costs for addressing a rear right turn control circuit low issue in a Jeep can range from $100 to $300, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's recommended to check with local shops for a more accurate estimate.

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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 Jeep Code

1. What are the common symptoms of OBDII code B1647 in a Jeep related to the Rear Right Turn Control Circuit Low?

- The common symptoms include malfunctioning or dim right turn signal lights on the rear of the vehicle.

2. What are the possible causes of OBDII code B1647 in a Jeep indicating a Rear Right Turn Control Circuit Low?

- The code B1647 can be triggered by issues such as a faulty turn signal bulb, a damaged wiring harness, or a malfunctioning turn signal switch.

3. How can I diagnose the cause of OBDII code B1647 related to the Rear Right Turn Control Circuit Low in my Jeep?

- You can start by visually inspecting the right turn signal bulb and the wiring connected to it. Using a multimeter to test for continuity in the circuit can help pinpoint the issue.

4. Can a loose or corroded connection be a reason for OBDII code B1647 in a Jeep showing a Rear Right Turn Control Circuit Low?

- Yes, a loose or corroded connection in the wiring harness can disrupt the flow of electricity to the right turn signal, triggering the B1647 code.

5. Is it advisable to reset the OBDII code B1647 in my Jeep after fixing the issue related to the Rear Right Turn Control Circuit Low?

- Yes, after repairing the problem causing the B1647 code, it is recommended to reset the code using an OBDII scanner to see if the issue has been successfully resolved.

6. Can extreme weather conditions affect the triggering of OBDII code B1647 in a Jeep for the Rear Right Turn Control Circuit Low?

- Yes, extreme weather conditions like heavy rain or snow can lead to moisture seeping into the wiring harness, causing a short circuit and triggering the B1647 code.

7. Are there any specific tips for repairing OBDII code B1647 in a Jeep related to the Rear Right Turn Control Circuit Low?

- Ensure all connections are secure, replace any damaged wiring or components, and test the circuit thoroughly to ensure proper functioning of the right turn signal.

8. Can a faulty turn signal relay cause OBDII code B1647 to appear in a Jeep indicating a Rear Right Turn Control Circuit Low?

- Yes, a faulty turn signal relay can interrupt the power supply to the right turn signal, leading to the triggering of the B1647 code.

9. How critical is it to address OBDII code B1647 in a Jeep regarding the Rear Right Turn Control Circuit Low promptly?

- It is important to address the issue promptly as a malfunctioning turn signal can compromise the safety of your vehicle and other drivers on the road.

10. Is it possible for OBDII code B1647 in a Jeep indicating a Rear Right Turn Control Circuit Low to recur after being repaired?

- If the root cause of the issue is not fully resolved or if there are underlying electrical problems in the vehicle, the B1647 code may reappear.

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