AutoCodes – Generic – B1604

B1604 Code - Lamp Anti-Theft Indicator Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Lamp Anti-Theft Indicator. Common causes include Faulty Lamp Anti-Theft Indicator, Lamp Anti-Theft Indicator harness is open or shorted, Lamp Anti-Theft Indicator 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: B1604 indicates Lamp Anti-Theft Indicator Circuit Open.
Common causes: Common causes include Faulty Lamp Anti-Theft Indicator, Lamp Anti-Theft Indicator harness is open or shorted, Lamp Anti-Theft Indicator 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 19,988

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 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1604 Description

The Body Control Module (BCM) monitors the Lamp Anti-Theft Indicator. The BCM sets the OBDII code when the Lamp Anti-Theft Indicator is not to factory specifications.

OBDII Code B1604 - Lamp Anti-Theft Indicator Circuit Open - AutoCodes.com — B1604 Code - Lamp Anti-Theft Indicator Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1604?

Faulty Lamp Anti-Theft Indicator
Lamp Anti-Theft Indicator harness is open or shorted
Lamp Anti-Theft Indicator circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1604?

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 B1604 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 B1604 code?

Need more information on how to fix the B1604 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1604 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1604 Chrysler — Right Solar Sensor Circuit Low
B1604 Dodge — Right Solar Sensor Circuit Low
B1604 Jeep — Right Solar Sensor Circuit Low
B1604 RAM — Right Solar Sensor Circuit Low

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 B1604 Code

1. What are the common symptoms of OBDII code B1604 (Lamp Anti-Theft Indicator Circuit Open)?

- The common symptoms include the anti-theft indicator light not illuminating or staying constantly on.

2. What are the possible causes of OBDII code B1604?

- The code B1604 may be caused by a faulty anti-theft indicator lamp, a damaged wiring harness, or a poor electrical connection.

3. How serious is OBDII code B1604?

- While code B1604 may not affect the drivability of the vehicle, it indicates a malfunction in the anti-theft system that could potentially compromise the vehicle's security.

4. How can I diagnose OBDII code B1604?

- Diagnosing code B1604 involves visually inspecting the anti-theft indicator lamp, checking the wiring for damage, and testing the electrical connections for continuity.

5. Can I still drive my vehicle with OBDII code B1604?

- It is generally safe to drive the vehicle with code B1604, but it is recommended to have the issue diagnosed and repaired to ensure the proper functioning of the anti-theft system.

6. How can I repair OBDII code B1604?

- Repairing code B1604 involves replacing the faulty anti-theft indicator lamp, repairing or replacing damaged wiring, and ensuring all electrical connections are secure.

7. Will resetting the OBDII code B1604 make the problem go away?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing code B1604. Proper diagnosis and repair are necessary.

8. Can a DIY enthusiast fix OBDII code B1604 at home?

- Depending on their skill level, a DIY enthusiast may be able to diagnose and repair code B1604 at home by following the manufacturer's repair manual and using appropriate tools.

9. Is OBDII code B1604 specific to certain vehicle makes and models?

- OBDII code B1604 (Lamp Anti-Theft Indicator Circuit Open) is a generic code that can be found on various vehicle makes and models equipped with an OBDII system.

10. How can I prevent OBDII code B1604 from occurring in the future?

- To prevent code B1604, it is important to regularly inspect the anti-theft indicator lamp, check the wiring for any signs of damage, and ensure all electrical connections are secure.