AutoCodes – Jeep – B1644 Jeep

B1644 Jeep Code - Rear Left Turn Control Circuit High

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: B1644 Jeep indicates Rear Left Turn Control Circuit High.
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 12,260

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 B1644 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 B1644 Jeep - Rear Left Turn Control Circuit High - AutoCodes.com — B1644 Jeep Code - Rear Left Turn Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B1644 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 B1644 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 B1644 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 B1644 Jeep code?

Need more information on how to fix the B1644 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1644 Jeep code diagnosed by a professional: Find a repair shop in your area

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 B1644 Jeep Code

1. What are the common symptoms of OBDII code B1644 in a Jeep related to the Rear Left Turn Control Circuit High?

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

2. What are some possible causes of the OBDII code B1644 in a Jeep for the Rear Left Turn Control Circuit High?

- Possible causes include a faulty turn signal bulb, damaged wiring or connectors in the rear left turn signal circuit, or a malfunctioning turn signal switch.

3. How can I diagnose the OBDII code B1644 in a Jeep for the Rear Left Turn Control Circuit High?

- You can start by visually inspecting the rear left turn signal bulb, checking the wiring and connectors for any damage, and testing the turn signal switch for proper operation using a multimeter.

4. Can a DIY enthusiast repair the OBDII code B1644 in a Jeep related to the Rear Left Turn Control Circuit High?

- Yes, some repairs, such as replacing a faulty turn signal bulb or repairing damaged wiring, can be done by a DIY enthusiast with basic automotive knowledge and tools.

5. Is it necessary to reset the OBDII code B1644 in a Jeep after repairing the Rear Left Turn Control Circuit High issue?

- Yes, it is recommended to reset the code using an OBDII scanner after repairing the issue to clear the fault code from the system and ensure the repair was successful.

6. Are there any safety precautions to consider when working on the Rear Left Turn Control Circuit in a Jeep?

- It is important to disconnect the vehicle's battery before working on any electrical components to prevent electrical shock or damage to the vehicle's electrical system.

7. What should I do if I am unable to diagnose or repair the OBDII code B1644 in a Jeep related to the Rear Left Turn Control Circuit High?

- If you are unable to diagnose or repair the issue yourself, it is recommended to seek assistance from a qualified mechanic or automotive technician for further diagnosis and repair.

8. Can a faulty rear left turn signal affect the overall safety of driving a Jeep with the OBDII code B1644?

- Yes, a faulty rear left turn signal can compromise the safety of the vehicle by impacting visibility to other drivers and increasing the risk of accidents, especially when changing lanes or making turns.

9. How can I prevent the OBDII code B1644 from reoccurring in the future in my Jeep?

- To prevent the code from reoccurring, it is essential to perform regular maintenance checks on the vehicle's lighting system, including inspecting and replacing turn signal bulbs as needed.

10. Is it possible for other OBDII codes to be triggered along with B1644 in a Jeep with the Rear Left Turn Control Circuit High issue?

- Yes, additional codes related to the vehicle's lighting system or electrical circuits may be triggered along with B1644, indicating a broader issue that may require thorough diagnosis and repair.