AutoCodes – Jeep – B1643 Jeep

B1643 Jeep Code - Rear Left Turn Control Circuit Low

Quick Answer

The Total Integrated Power Module (TIPM) monitors the Rear Left Turn Control. Common causes include Faulty Rear Left Turn Signal Lamp, Rear Left Turn Signal Lamp harness is open or shorted, Rear Left Turn Signal Lamp circuit poor electrical connection. 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 Jeep indicates Rear Left Turn Control Circuit Low.
Common causes: Common causes include Faulty Rear Left Turn Signal Lamp, Rear Left Turn Signal Lamp harness is open or shorted, Rear Left Turn Signal Lamp circuit poor electrical connection.
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.

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Code Popularity 1,609

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 28, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1643 Jeep Description

The Total Integrated Power Module (TIPM) monitors the Rear Left Turn Control. The TIPM sets the OBDII code when the Rear Left Turn Control is not to factory specifications.

OBDII Code B1643 Jeep - Rear Left Turn Control Circuit Low - AutoCodes.com — B1643 Jeep Code - Rear Left Turn Control Circuit Low

What does this mean?

What are the Possible Causes of the DTC B1643 Jeep?

Faulty Rear Left Turn Signal Lamp
Rear Left Turn Signal Lamp harness is open or shorted
Rear Left Turn Signal Lamp circuit poor electrical connection
Faulty Total Integrated Power Module (TIPM)

How to Fix the DTC B1643 Jeep?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1643 Jeep code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1643 Jeep code?

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Need Help with the Code?

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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 Jeep Code

1. What are common symptoms of OBDII code B1643 in a Jeep related to the rear left turn control circuit low?

- Common symptoms include the rear left turn signal not working properly or blinking faster than normal.

2. What are possible causes of OBDII code B1643 in a Jeep indicating a rear left turn control circuit low?

- Possible causes include a faulty turn signal bulb, a damaged wiring harness, or a malfunctioning turn signal switch.

3. How can I diagnose the issue causing OBDII code B1643 in my Jeep for the rear left turn control circuit low?

- You can use a multimeter to test the continuity of the wiring, visually inspect the turn signal bulb, and check the connections to the turn signal switch.

4. Is it safe to continue driving my Jeep with OBDII code B1643 related to the rear left turn control circuit low?

- It is not recommended to drive with this issue as it can affect your vehicle's visibility to other drivers and compromise your safety on the road.

5. Can I repair OBDII code B1643 in my Jeep for the rear left turn control circuit low myself?

- Depending on your experience and tools, you may be able to replace a faulty turn signal bulb or address a loose connection, but more complex issues may require professional assistance.

6. How much can I expect to pay to fix OBDII code B1643 in my Jeep indicating a rear left turn control circuit low?

- The cost of repairs can vary based on the specific issue, but it may range from a simple bulb replacement costing around $10 to more extensive wiring repairs that could cost several hundred dollars.

7. Will resetting the OBDII code B1643 in my Jeep related to the rear left turn control circuit low make the issue go away?

- Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

8. Are there any preventative measures I can take to avoid OBDII code B1643 in my Jeep for the rear left turn control circuit low in the future?

- Regularly checking and maintaining your vehicle's turn signal system, including inspecting bulbs and wiring, can help prevent issues that trigger this diagnostic trouble code.

9. Can extreme weather conditions or rough terrain contribute to triggering OBDII code B1643 in a Jeep for the rear left turn control circuit low?

- Yes, exposure to harsh weather elements or driving on rough roads can potentially damage the turn signal components and contribute to the occurrence of this fault code.

10. How long does it typically take to repair OBDII code B1643 in a Jeep associated with the rear left turn control circuit low?

- The repair time can vary depending on the specific cause of the issue, but simple fixes like replacing a bulb may take 15-30 minutes, while more complex wiring repairs could take several hours or more.