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Engine-Codes – Generic – U2137

U2137 Code - Lost Communications With Vehicle Theft Deterrent Module

Quick Answer

The U2137 diagnostic trouble code (DTC) refers to a communication issue between the vehicle's onboard computer system and the Vehicle Theft Deterrent (VTD) module. Common causes include Faulty wiring or connectors in the communication network, Malfunctioning VTD module, Software glitch in the vehicle's computer system. 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 indicates Lost Communications With Vehicle Theft Deterrent Module.
Common causes
Common causes include Faulty wiring or connectors in the communication network, Malfunctioning VTD module, Software glitch in the vehicle's computer system.
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 08, 2024
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Code U2137 Description

The U2137 diagnostic trouble code (DTC) refers to a communication issue between the vehicle's onboard computer system and the Vehicle Theft Deterrent (VTD) module. The VTD module is responsible for monitoring and controlling the vehicle's anti-theft system, which includes features like immobilizers, alarms, and keyless entry systems. When communication is lost with this module, it can lead to various problems related to vehicle security and functionality.

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

Common Causes of U2137

  1. Faulty wiring or connectors in the communication network
  2. Malfunctioning VTD module
  3. Software glitch in the vehicle's computer system
  4. Corrosion or damage to the wiring harness
  5. Electrical interference or poor connections

Symptoms of U2137

  1. Inability to start the vehicle
  2. Engine stalling or shutting off unexpectedly
  3. Anti-theft system malfunction or warning lights
  4. Keyless entry system not working
  5. Increased vulnerability to theft

How to Fix U2137

  1. Perform a thorough inspection of the wiring harness and connectors for any signs of damage or corrosion.
  2. Check the VTD module for proper functioning and replace if necessary.
  3. Use diagnostic tools to reset the communication network and reestablish connections.
  4. Update the vehicle's software to address any glitches in the computer system.
  5. Test the vehicle to ensure proper communication between the onboard computer system and the VTD module.

Cost to Fix U2137

The typical repair costs for resolving a U2137 code can vary depending on the specific cause of the issue. In general, the parts and labor for this repair can range from $200 to $500. However, it's important to note that these are just rough estimates and actual costs can vary based on factors such as location, vehicle make and model, and the extent of the repairs needed. It's recommended to consult with a qualified mechanic or auto repair shop to get a more accurate cost estimate for addressing this particular issue. Additionally, keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to inquire about these rates before proceeding with the repair.

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Code U2137 Information for Specific Makes

  • U2137 Buick — Lost Communications With Vehicle Theft Deterrent Module
  • U2137 Cadillac — Lost Communications With Vehicle Theft Deterrent Module
  • U2137 Chevrolet — Lost Communications With Vehicle Theft Deterrent Module
  • U2137 GMC — Lost Communications With Vehicle Theft Deterrent Module
  • U2137 Pontiac — Lost Communications With Vehicle Theft Deterrent Module
  • U2137 Saturn — Lost Communications With Vehicle Theft Deterrent Module
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 Code

1. What are the common symptoms of OBDII code U2137 - Lost Communications With Vehicle Theft Deterrent Module?

- Common symptoms include the inability to start the vehicle, the security light staying on, and issues with the door locks or alarm system.

2. What are possible causes of OBDII code U2137?

- Possible causes may include a faulty vehicle theft deterrent module, a damaged wiring harness, loose connections, or a malfunctioning control module.

3. How can I diagnose OBDII code U2137?

- Diagnosing this code typically involves checking the connections to the vehicle theft deterrent module, inspecting the wiring for any damage, and using a diagnostic scanner to communicate with the module.

4. Can OBDII code U2137 be cleared/reset, or does it require repair?

- Clearing the code may temporarily resolve the issue, but it is important to address the underlying cause to prevent the code from reappearing. Repairing the module or fixing any wiring issues is recommended.

5. Is it safe to continue driving with OBDII code U2137 present?

- It is not recommended to continue driving with this code active, as it may affect the vehicle's security system and potentially lead to starting or security issues.

6. Are there any DIY repair tips for fixing OBDII code U2137?

- DIY repair tips may include checking and securing the connections to the vehicle theft deterrent module, inspecting the wiring for damage, and ensuring all components are properly connected.

7. How much does it cost to repair OBDII code U2137?

- The cost of repairing this code can vary depending on the underlying issue. It may range from a simple fix like securing loose connections to replacing the vehicle theft deterrent module, which can be more expensive.

8. Can a mechanic easily fix OBDII code U2137, or is it a complex issue?

- A mechanic with experience in diagnosing and repairing electrical issues should be able to address OBDII code U2137. The complexity of the repair will depend on the specific cause of the communication loss.

9. Will OBDII code U2137 cause any long-term damage to the vehicle if left unaddressed?

- Leaving this code unaddressed may lead to further issues with the vehicle's security system and potentially impact its overall functionality. It is advisable to resolve the problem promptly.

10. Is it common for OBDII code U2137 to recur even after repairs?

- Recurrence of the code is possible if the root cause of the communication loss is not properly resolved. Thorough diagnosis and repair are essential to prevent the code from coming back.

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