AutoCodes – RAM – B1629 RAM

B1629 RAM Code - Cargo Lamp Control Circuit Open

Quick Answer

The Instrument Cluster monitors the Cargo Lamp. Common causes include Faulty Cargo Lamp, Cargo Lamp harness is open or shorted, Cargo 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: B1629 RAM indicates Cargo Lamp Control Circuit Open.
Common causes: Common causes include Faulty Cargo Lamp, Cargo Lamp harness is open or shorted, Cargo 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 3,392

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 24, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1629 RAM Description

The Instrument Cluster monitors the Cargo Lamp. The Instrument Cluster sets the OBDII code when the Cargo Lamp is not to factory specifications.

OBDII Code B1629 RAM - Cargo Lamp Control Circuit Open - AutoCodes.com — B1629 RAM Code - Cargo Lamp Control Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1629 RAM?

Faulty Cargo Lamp
Cargo Lamp harness is open or shorted
Cargo Lamp circuit poor electrical connection
Faulty Instrument Cluster

How to Fix the DTC B1629 RAM?

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 B1629 RAM 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.

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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 B1629 RAM Code

1. What are the common symptoms of OBDII code B1629 RAM Cargo Lamp Control Circuit Open?

- The common symptoms include the cargo lamp not turning on, flickering cargo lamp, or the cargo lamp staying on constantly.

2. What are the possible causes of code B1629 RAM Cargo Lamp Control Circuit Open?

- The code may be triggered by a faulty cargo lamp switch, damaged wiring in the cargo lamp circuit, or a defective cargo lamp control module.

3. How can I diagnose the issue causing code B1629 RAM Cargo Lamp Control Circuit Open?

- You can start by checking the cargo lamp fuse, inspecting the wiring for any signs of damage, and testing the cargo lamp switch for proper function using a multimeter.

4. Can a blown fuse cause OBDII code B1629 RAM Cargo Lamp Control Circuit Open?

- Yes, a blown fuse in the cargo lamp circuit can cause the control circuit to be open and trigger the B1629 code.

5. How can I repair OBDII code B1629 RAM Cargo Lamp Control Circuit Open?

- To repair the issue, you may need to replace the cargo lamp switch, repair any damaged wiring in the circuit, or replace the cargo lamp control module if it is faulty.

6. Is it safe to continue driving with OBDII code B1629 RAM Cargo Lamp Control Circuit Open?

- While the issue may not affect the vehicle's drivability, it is recommended to address the problem promptly to ensure the cargo lamp functions correctly.

7. Can a DIY enthusiast fix OBDII code B1629 RAM Cargo Lamp Control Circuit Open?

- Depending on your skill level and access to tools, you may be able to diagnose and repair the issue yourself. However, if you are unsure, it is best to consult a professional mechanic.

8. Will resetting the OBDII code B1629 RAM Cargo Lamp Control Circuit Open make the problem go away?

- Resetting the code may temporarily turn off the warning light, but it will not fix the underlying issue causing the cargo lamp control circuit to be open.

9. How much does it typically cost to repair OBDII code B1629 RAM Cargo Lamp Control Circuit Open at a repair shop?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $300 for parts and labor.

10. Can extreme weather conditions affect the cargo lamp control circuit and trigger code B1629 RAM Cargo Lamp Control Circuit Open?

- Yes, extreme temperatures or moisture exposure can lead to corrosion or damage in the cargo lamp circuit, potentially causing the control circuit to be open and triggering the B1629 code.