AutoCodes – Jeep – U1449 Jeep

U1449 Jeep Code - Implausible ERS Message Recieved Transmission Control Module

Quick Answer

This message is used by the Transmission Control Module (TCM) for Electronic Range Select (ERS) operation. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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: U1449 Jeep indicates Implausible ERS Message Recieved Transmission Control Module.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module 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 2,043

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, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1449 Jeep Description

This message is used by the Transmission Control Module (TCM) for Electronic Range Select (ERS) operation. The ERS switch is hard wired to the Cabin Compartment Node (CCN). The CCN then sends a CAN bus message to the TCM. This Diagnostic Trouble Code (DTC) is set when the ERS message is not received or invalid.

OBDII Code U1449 Jeep - Implausible ERS Message Recieved Transmission Control Module - AutoCodes.com — U1449 Jeep Code - Implausible ERS Message Recieved Transmission Control Module

What does this mean?

What are the Possible Causes of the DTC U1449 Jeep?

Faulty Transmission Control Module (TCM)
Transmission Control Module harness is open or shorted
Transmission Control Module circuit poor electrical connection
Faulty Cabin Compartment Node (CCN)

How to Fix the DTC U1449 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 U1449 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 U1449 Jeep code?

Need more information on how to fix the U1449 Jeep code? Get Access to Factory Service Manuals

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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 U1449 Jeep Code

1. What are the common symptoms of OBDII code U1449 in a Jeep?

- Common symptoms include erratic shifting, transmission slipping, and potential loss of power.

2. What does the OBDII code U1449 Jeep - Implausible ERS Message Recieved Transmission Control Module mean?

- This code indicates that the Transmission Control Module (TCM) has detected an implausible message related to the Electronic Range Select (ERS) system.

3. What are the possible causes of code U1449 in a Jeep?

- Potential causes include faulty wiring or connectors, TCM software issues, ERS switch problems, or a malfunctioning TCM itself.

4. How can I diagnose the OBDII code U1449 in my Jeep?

- Diagnosis typically involves checking the wiring and connectors related to the ERS system, testing the ERS switch, and using a diagnostic scanner to communicate with the TCM for further analysis.

5. Can I still drive my Jeep with code U1449 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further transmission issues and potential safety hazards.

6. How can I repair OBDII code U1449 in my Jeep?

- Repairs may involve fixing any damaged wiring or connectors, replacing the ERS switch if necessary, updating TCM software, or replacing the TCM itself in severe cases.

7. Is it possible to reset the U1449 code in a Jeep without fixing the underlying issue?

- While clearing the code temporarily may be possible, it is crucial to address the root cause of the problem to prevent it from reoccurring.

8. Will disconnecting the battery reset the U1449 code in my Jeep?

- Disconnecting the battery may clear the code temporarily, but it is not a permanent solution. The code is likely to return if the underlying issue is not resolved.

9. Can a DIY enthusiast fix the U1449 code in a Jeep?

- Depending on the cause of the code, some DIY enthusiasts may be able to address the issue, especially if it involves basic wiring checks or ERS switch replacement. However, complex TCM issues may require professional assistance.

10. How much can I expect to pay to repair OBDII code U1449 in my Jeep?

- Repair costs can vary depending on the specific cause of the code and the extent of the repairs needed. It is advisable to consult a professional mechanic for an accurate diagnosis and cost estimate.