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U2137 Pontiac Code - Lost Communications With Vehicle Theft Deterrent Module

Quick Answer

The U2137 diagnostic trouble code (DTC) for Pontiac vehicles indicates that there has been a communication failure with the Vehicle Theft Deterrent (VTD) module. Common causes include Faulty wiring or connections between the VTD module and other modules, Defective VTD module, Corrosion or damage to the VTD module connectors. 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
U2137 Pontiac indicates Lost Communications With Vehicle Theft Deterrent Module.
Common causes
Common causes include Faulty wiring or connections between the VTD module and other modules, Defective VTD module, Corrosion or damage to the VTD module connectors.
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 15, 2024
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Code U2137 Pontiac Description

The U2137 diagnostic trouble code (DTC) for Pontiac vehicles indicates that there has been a communication failure with the Vehicle Theft Deterrent (VTD) module. The VTD module is an essential component of the vehicle's security system, responsible for preventing unauthorized access and theft. When communication is lost with this module, it can lead to various issues with the vehicle's security features and potentially impact its overall performance.

OBDII Code U2137 Pontiac - Lost Communications With Vehicle Theft Deterrent Module
U2137 Pontiac Code - Lost Communications With Vehicle Theft Deterrent Module

Common Causes of U2137 Pontiac

  1. Faulty wiring or connections between the VTD module and other modules
  2. Defective VTD module
  3. Corrosion or damage to the VTD module connectors
  4. Software issues or programming errors
  5. Electrical interference or communication bus faults

Symptoms of U2137 Pontiac

  1. Engine not starting or difficulty starting
  2. Security light illuminated on the dashboard
  3. Key fob not recognized by the vehicle
  4. Alarm system not functioning properly
  5. Loss of power door locks or other security-related features

How to Fix U2137 Pontiac

  1. Begin by conducting a thorough inspection of the wiring and connectors associated with the VTD module to check for any visible damage or corrosion.
  2. Use a diagnostic scanner to communicate with the VTD module and identify any specific error codes or communication issues.
  3. If necessary, replace the VTD module with a new or refurbished unit and reprogram it to communicate with the vehicle's other modules.
  4. Clear the DTC from the vehicle's memory using the diagnostic scanner and perform a test drive to ensure that the issue has been resolved.
  5. If the problem persists, further diagnosis may be required to pinpoint the exact cause of the communication failure.

Cost to Fix U2137 Pontiac

The typical repair costs for addressing a U2137 code on a Pontiac vehicle can vary depending on the specific cause of the issue. In general, replacing a faulty VTD module and reprogramming it can range from $300 to $600, including parts and labor. However, it's essential to note that diagnosis time and labor rates at auto repair shops can vary significantly based on factors such as location, vehicle make and model, and engine type. It's advisable to check with local shops for a more accurate estimate tailored to your specific situation. Keep in mind that rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.

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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 U2137 Pontiac Code

1. What are the common symptoms of OBDII code U2137 in a Pontiac related to "Lost Communications With Vehicle Theft Deterrent Module"?

- Common symptoms include issues with the vehicle's anti-theft system, difficulty starting the car, and the security light staying illuminated on the dashboard.

2. What are possible causes of OBDII code U2137 in a Pontiac?

- The code U2137 can be triggered by a faulty Vehicle Theft Deterrent (VTD) module, damaged wiring or connectors, or a communication breakdown between the module and other vehicle systems.

3. How can I diagnose the cause of OBDII code U2137 in my Pontiac?

- Diagnosis typically involves checking the wiring and connectors related to the Vehicle Theft Deterrent module, testing the module itself for faults, and using a scan tool to identify communication errors.

4. Is it safe to continue driving my Pontiac with OBDII code U2137 present?

- It is generally not recommended to drive the vehicle with this code present, as it can lead to potential security issues or difficulties starting the car.

5. Can I repair OBDII code U2137 in my Pontiac myself?

- While some DIY enthusiasts may attempt to diagnose and repair this code, it is often best to consult a professional technician with experience in dealing with anti-theft systems.

6. How much does it typically cost to repair OBDII code U2137 in a Pontiac?

- Repair costs can vary depending on the root cause of the issue, but it may involve replacing the VTD module, repairing wiring, or reprogramming the system, which can range from a few hundred to a thousand dollars.

7. Are there any preventive measures to avoid triggering OBDII code U2137 in my Pontiac?

- Regularly maintaining the vehicle's anti-theft system, ensuring proper wiring connections, and promptly addressing any security system warning signs can help prevent the code from being triggered.

8. Can a low battery voltage cause OBDII code U2137 to appear in my Pontiac?

- Yes, a low battery voltage can sometimes lead to communication issues with the Vehicle Theft Deterrent module, triggering the U2137 code. It is recommended to check the battery health as part of the diagnosis.

9. Will resetting the OBDII code U2137 in my Pontiac make the problem go away permanently?

- Simply resetting the code without addressing the underlying issue will not permanently solve the problem. It is crucial to diagnose and repair the root cause to prevent the code from reappearing.

10. How long does it typically take to repair OBDII code U2137 in a Pontiac?

- The repair time can vary based on the specific issue causing the code, but it may take a few hours to a full day for a professional technician to diagnose, repair, and test the anti-theft system thoroughly.

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