Engine-CodesChrysler – B1643 Chrysler

B1643 Chrysler Code - Rear Left Turn Control Circuit Low

Quick Answer

The B1643 Chrysler code indicates a problem with the rear left turn control circuit being detected as low. Common causes include Faulty wiring connection, Blown fuse, 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
B1643 Chrysler indicates Rear Left Turn Control Circuit Low.
Common causes
Common causes include Faulty wiring connection, Blown fuse, 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 09, 2024
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Code B1643 Chrysler Description

The B1643 Chrysler code indicates a problem with the rear left turn control circuit being detected as low. This means that there is an issue with the electrical circuit that controls the left turn signal in the rear of the vehicle. The turn signal system plays a crucial role in ensuring the safety of the vehicle, as it alerts other drivers and pedestrians of the driver's intention to turn or change lanes. When this circuit is not functioning properly, it can lead to a variety of issues that can affect the vehicle's performance and safety.

OBDII Code B1643 Chrysler - Rear Left Turn Control Circuit Low
B1643 Chrysler Code - Rear Left Turn Control Circuit Low

Common Causes of B1643 Chrysler

  1. Faulty wiring connection
  2. Blown fuse
  3. Malfunctioning turn signal switch
  4. Problem with the turn signal relay
  5. Corrosion in the electrical connections

Symptoms of B1643 Chrysler

  1. Left turn signal not working
  2. Rapid flashing of the left turn signal
  3. Turn signal indicator on the dashboard not working
  4. Dim or flickering left turn signal light
  5. Error message on the dashboard related to the turn signal system

How to Fix B1643 Chrysler

  1. Begin by inspecting the wiring and connections in the rear left turn control circuit for any damage or corrosion.
  2. Check the fuse related to the turn signal system and replace it if necessary.
  3. Test the turn signal switch to ensure it is functioning properly and replace it if needed.
  4. Inspect the turn signal relay and replace it if it is faulty.
  5. Clear the diagnostic trouble codes with a scan tool after completing the repairs and test the left turn signal to ensure it is functioning correctly.

Cost to Fix B1643 Chrysler

The cost of repairing the B1643 Chrysler 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, with labor costs adding an additional $80 to $150 per hour. It's advisable to inquire with local auto repair shops for a more precise estimate based on your vehicle make and model.

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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 B1643 Chrysler Code

1. What are the common symptoms of OBDII code B1643 in a Chrysler related to the Rear Left Turn Control Circuit Low?

- Common symptoms include the left turn signal not functioning properly, fast blinking of the turn signal, or the turn signal staying constantly on.

2. What are the possible causes of OBDII code B1643 in a Chrysler?

- The code B1643 can be caused by issues such as a malfunctioning turn signal switch, a faulty wiring harness, a blown fuse, or a problem with the turn signal bulb.

3. How can I diagnose the OBDII code B1643 related to the Rear Left Turn Control Circuit Low in my Chrysler?

- To diagnose this code, you can start by checking the left turn signal bulb, inspecting the wiring for any damage, testing the turn signal switch, and verifying the fuse related to the turn signal circuit.

4. What are some repair tips for fixing OBDII code B1643 in a Chrysler?

- Repair tips may include replacing the left turn signal bulb, repairing any damaged wiring, replacing the turn signal switch if necessary, and checking and replacing any blown fuses in the circuit.

5. Can OBDII code B1643 in a Chrysler cause any safety concerns?

- Yes, since the left turn signal is an essential safety feature for indicating turns to other drivers, it is important to address and repair the issue promptly to ensure safe driving conditions.

6. Is it possible to reset the OBDII code B1643 in a Chrysler without fixing the underlying issue?

- While you can clear the code temporarily, it is essential to address the root cause of the problem to prevent the code from reoccurring and ensure proper functioning of the left turn signal.

7. How do I know if the OBDII code B1643 in my Chrysler is related to a wiring issue?

- If the left turn signal functions intermittently or exhibits erratic behavior along with the code B1643, it is advisable to inspect the wiring harness for any signs of damage or corrosion.

8. Can extreme weather conditions contribute to triggering OBDII code B1643 in a Chrysler?

- Yes, extreme weather conditions such as heavy rain, snow, or humidity can potentially cause electrical connections to corrode or short circuit, leading to the triggering of the B1643 code.

9. Are there any recalls or technical service bulletins related to OBDII code B1643 in Chrysler vehicles?

- It is recommended to check with a Chrysler dealership or visit the NHTSA website to see if there are any recalls or technical service bulletins addressing the OBDII code B1643 for specific Chrysler models.

10. Is it possible to prevent OBDII code B1643 from occurring in my Chrysler?

- Regular maintenance checks, prompt replacement of faulty bulbs, and addressing any electrical issues promptly can help prevent the occurrence of the B1643 code in your Chrysler.

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