AutoCodes – Jeep – C149B Jeep

C149B Jeep Code - Rear Driveline Module

Quick Answer

The Drive Train Control Module (DTCM) monitors the Rear Driveline Module (RDM). Common causes include Faulty Rear Driveline Module (RDM), Rear Driveline Module (RDM) harness is open or shorted, Rear Driveline Module (RDM) 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
C149B Jeep indicates Rear Driveline Module.
Common causes
Common causes include Faulty Rear Driveline Module (RDM), Rear Driveline Module (RDM) harness is open or shorted, Rear Driveline Module (RDM) 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 1,124
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 15, 2020
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code C149B Jeep Description

The Drive Train Control Module (DTCM) monitors the Rear Driveline Module (RDM). The DTCM sets the OBDII code when it detects that the Rear Driveline Module (RDM) system voltage is below or above normal voltage, or an overheating condition due to excessive usage of components from hard driving conditions (Mud, Sand, Snow, 2WD Chassis dynamometer etc.) or ambient temperatures.
OBDII Code C149B Jeep - Rear Driveline Module - AutoCodes.com
C149B Jeep Code - Rear Driveline Module

What are the Possible Causes of the DTC C149B Jeep?

  • Faulty Rear Driveline Module (RDM)
  • Rear Driveline Module (RDM) harness is open or shorted
  • Rear Driveline Module (RDM) circuit poor electrical connection
  • Faulty Drive Train Control Module (DTCM)

How to Fix the DTC C149B 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the C149B 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 C149B Jeep code?

Need more information on how to fix the C149B Jeep code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the C149B 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 C149B Jeep Code

1. What are common symptoms of OBDII code C149B in a Jeep related to the Rear Driveline Module?

- Common symptoms include illuminated warning lights on the dashboard, issues with the drivetrain, and reduced vehicle performance.

2. What can cause the OBDII code C149B to trigger in a Jeep's Rear Driveline Module?

- The code C149B can be triggered by problems such as damaged wiring, a faulty module, or communication errors within the driveline system.

3. How can I diagnose the OBDII code C149B in my Jeep's Rear Driveline Module?

- A diagnostic scan tool can be used to retrieve the specific error code, followed by a thorough inspection of the driveline module components and wiring for any visible damage.

4. Is it safe to continue driving my Jeep if the OBDII code C149B related to the Rear Driveline Module is present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage and potential safety hazards. It's best to address the issue promptly.

5. Can I reset the OBDII code C149B related to the Rear Driveline Module in my Jeep without fixing the underlying issue?

- While you can clear the code using a diagnostic tool, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure the driveline system's proper function.

6. What are some repair tips for fixing the OBDII code C149B in a Jeep's Rear Driveline Module?

- Repair tips may include checking and repairing any damaged wiring, replacing the faulty module, and ensuring proper communication between driveline components.

7. How much does it typically cost to repair the OBDII code C149B related to the Rear Driveline Module in a Jeep?

- Repair costs can vary depending on the extent of the issue and the specific components that need to be replaced. It is recommended to consult with a professional mechanic for an accurate estimate.

8. Can a DIY enthusiast fix the OBDII code C149B in a Jeep's Rear Driveline Module, or is it best left to a professional?

- While some troubleshooting steps can be performed by a DIY enthusiast, complex issues with the Rear Driveline Module may require specialized tools and expertise, making it best to consult a professional mechanic.

9. Will fixing the OBDII code C149B related to the Rear Driveline Module improve my Jeep's fuel efficiency?

- Addressing the code may improve overall vehicle performance, which could indirectly lead to better fuel efficiency. However, the primary goal is to ensure the driveline system's proper function and safety.

10. How long does it usually take to repair the OBDII code C149B in a Jeep's Rear Driveline Module?

- The repair time can vary based on the specific issue causing the code and the availability of parts. Simple fixes may take a few hours, while more complex repairs could require a day or more.

Discuss the causes and fixes for C149B Jeep OBDII Code

Code C149B Jeep comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play