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Engine-Codes – Generic – U2149

U2149 Code - Lost Communication With Tire Pressure Monitor System

Quick Answer

The U2149 code indicates that the vehicle has lost communication with the Tire Pressure Monitor System (TPMS). Common causes include Faulty TPMS sensors, Wiring issues or shorts in the TPMS system, Malfunctioning TPMS module. 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
U2149 indicates Lost Communication With Tire Pressure Monitor System.
Common causes
Common causes include Faulty TPMS sensors, Wiring issues or shorts in the TPMS system, Malfunctioning TPMS module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 07, 2024
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Code U2149 Description

The U2149 code indicates that the vehicle has lost communication with the Tire Pressure Monitor System (TPMS). The TPMS is responsible for monitoring the air pressure in the tires and alerting the driver if the pressure is too low. When communication with the TPMS is lost, it can lead to a variety of issues that affect the vehicle's performance and safety.

OBDII Code U2149 - Lost Communication With Tire Pressure Monitor System
U2149 Code - Lost Communication With Tire Pressure Monitor System

Common Causes of U2149

  1. Faulty TPMS sensors
  2. Wiring issues or shorts in the TPMS system
  3. Malfunctioning TPMS module
  4. Low battery voltage affecting communication with the TPMS
  5. Physical damage to TPMS sensors or wiring

Symptoms of U2149

  1. TPMS warning light illuminated on the dashboard
  2. Inaccurate or inconsistent tire pressure readings
  3. Loss of communication with TPMS sensors
  4. Erratic behavior of the TPMS system
  5. Increased risk of tire blowouts or accidents due to incorrect tire pressure

How to Fix U2149

  1. Diagnose the issue by connecting a diagnostic scanner to retrieve the specific fault codes, including U2149.
  2. Inspect the TPMS sensors, wiring, and module for any visible damage or loose connections.
  3. Replace any faulty TPMS sensors or repair damaged wiring as needed.
  4. Reset the TPMS system and recalibrate the sensors to ensure proper communication.
  5. Test drive the vehicle to verify that the TPMS warning light is no longer illuminated and that accurate tire pressure readings are displayed.

Cost to Fix U2149

The cost of repairing the U2149 code can vary depending on the specific issue causing the communication loss with the TPMS. Typically, replacing a faulty TPMS sensor can cost between $50 to $200 per sensor, while repairing wiring issues or replacing the TPMS module may range from $100 to $500. Labor costs can add an additional $80 to $150 per hour, with the total repair cost potentially ranging from $150 to $1000 or more. It's recommended to consult with a certified mechanic or auto repair shop to get an accurate estimate based on the vehicle make and model, as well as the extent of the repairs needed.

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Code U2149 Information for Specific Makes

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 U2149 Code

1. What are the common symptoms of OBDII code U2149 (Lost Communication With Tire Pressure Monitor System)?

- Common symptoms include the TPMS warning light illuminating on the dashboard, inaccurate or missing tire pressure readings, and potential issues with the vehicle's stability control system.

2. What are some possible causes of OBDII code U2149?

- The code U2149 can be caused by issues such as damaged or faulty TPMS sensors, wiring or communication network problems, low tire pressure, or a malfunctioning TPMS module.

3. How can I diagnose the cause of OBDII code U2149?

- To diagnose the issue, you can start by checking the tire pressures, inspecting the TPMS sensors for damage, testing the TPMS module, and scanning the vehicle's onboard diagnostic system for fault codes.

4. Can driving with OBDII code U2149 pose any risks?

- Driving with the U2149 code may lead to inaccurate tire pressure readings, potentially causing unsafe driving conditions due to improper tire inflation levels. It is recommended to address the issue promptly.

5. How can I repair OBDII code U2149?

- Repairing the U2149 code involves addressing the root cause, which may include replacing faulty TPMS sensors, repairing damaged wiring, resetting the TPMS system, or reprogramming the TPMS module as needed.

6. Is it possible to reset OBDII code U2149 without professional help?

- While some basic troubleshooting steps can be performed by vehicle owners, resetting the U2149 code may require specialized tools or knowledge, so seeking professional assistance is often recommended.

7. Are there any DIY tips for preventing OBDII code U2149 from recurring?

- Regularly checking tire pressures, ensuring proper tire maintenance, and keeping an eye on the TPMS warning light can help prevent the U2149 code from recurring and maintain optimal vehicle safety.

8. Can extreme weather conditions affect the occurrence of OBDII code U2149?

- Yes, extreme temperature changes can impact tire pressure readings and the performance of TPMS sensors, potentially triggering the U2149 code. It's essential to monitor tire pressures in varying weather conditions.

9. How long does it typically take to repair OBDII code U2149?

- The repair time for the U2149 code can vary depending on the underlying cause and the complexity of the issue. In some cases, it may be resolved quickly with a sensor replacement, while more intricate problems may take longer to diagnose and repair.

10. Should I be concerned if the U2149 code reappears after repairs?

- If the U2149 code reappears after repairs, it may indicate a persistent issue that requires further inspection. Consult a professional technician to diagnose any underlying problems and ensure proper resolution.

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