AutoCodes – Jeep – B1664 Jeep

B1664 Jeep Code - Rear Fog Lamp Control Circuit High

Quick Answer

The Totally Integrated Power Module (TIPM) monitors the Rear Fog Lamp Control. Common causes include Faulty Left or Right Rear Fog Lamp Bulb, Left or Right Rear Fog Lamp Bulb harness is open or shorted, Left or Right Rear Fog Lamp Bulb 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: B1664 Jeep indicates Rear Fog Lamp Control Circuit High.
Common causes: Common causes include Faulty Left or Right Rear Fog Lamp Bulb, Left or Right Rear Fog Lamp Bulb harness is open or shorted, Left or Right Rear Fog Lamp Bulb 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 1,978

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 Jun 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1664 Jeep Description

The Totally Integrated Power Module (TIPM) monitors the Rear Fog Lamp Control. The TIPM sets the OBDII code when the Rear Fog Lamp Control is not to factory specifications.

OBDII Code B1664 Jeep - Rear Fog Lamp Control Circuit High - AutoCodes.com — B1664 Jeep Code - Rear Fog Lamp Control Circuit High

What does this mean?

What are the Possible Causes of the DTC B1664 Jeep?

Faulty Left or Right Rear Fog Lamp Bulb
Left or Right Rear Fog Lamp Bulb harness is open or shorted
Left or Right Rear Fog Lamp Bulb circuit poor electrical connection
Faulty Totally Integrated Power Module (TIPM)

How to Fix the DTC B1664 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 B1664 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 B1664 Jeep code?

Need more information on how to fix the B1664 Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1664 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 B1664 Jeep Code

1. What are the common symptoms of OBDII code B1664 in a Jeep related to the rear fog lamp control circuit high?

The common symptoms include the rear fog lamp not functioning properly, flickering, or staying on constantly.

2. What can cause the OBDII code B1664 in a Jeep indicating a rear fog lamp control circuit high?

Possible causes include a short circuit in the wiring, a faulty rear fog lamp switch, or a malfunctioning body control module.

3. How can I diagnose the OBDII code B1664 in my Jeep for the rear fog lamp control circuit high?

You can start by checking the wiring harness for any visible damage, testing the rear fog lamp switch for proper functionality, and using a multimeter to test the voltage in the circuit.

4. Is it safe to continue driving my Jeep with the OBDII code B1664 indicating a rear fog lamp control circuit high?

It is not recommended to drive with this issue as it may affect visibility to other drivers, especially in low-light conditions.

5. Can I repair the OBDII code B1664 in my Jeep related to the rear fog lamp control circuit high on my own?

If you have experience with automotive electrical systems and access to the necessary tools, you may be able to diagnose and repair the issue. Otherwise, it's best to seek professional help.

6. Are there any temporary fixes I can try for the OBDII code B1664 in my Jeep until I can get it repaired?

You can try disconnecting the rear fog lamp to prevent any further electrical issues until you can have the problem properly diagnosed and repaired.

7. Will resetting the OBDII system clear the B1664 code related to the rear fog lamp control circuit high in my Jeep?

Resetting the system may clear the code temporarily, but if the underlying issue is not fixed, the code is likely to reappear.

8. How much does it typically cost to repair the OBDII code B1664 in a Jeep for the rear fog lamp control circuit high?

The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing wiring harnesses, switches, or the body control module, which can range from a few hundred to over a thousand dollars.

9. Can extreme weather conditions cause the OBDII code B1664 to trigger in a Jeep for the rear fog lamp control circuit high?

Extreme weather conditions, such as heavy rain or snow, can potentially damage the wiring or components related to the rear fog lamp control circuit, leading to the code being triggered.

10. How important is it to address the OBDII code B1664 in a Jeep indicating a rear fog lamp control circuit high promptly?

It is important to address this issue promptly not only for your safety on the road but also to prevent further damage to the electrical system of your vehicle.