AutoCodes – Cadillac – U2137 Cadillac

U2137 Cadillac Code - Lost Communications With Vehicle Theft Deterrent Module

Quick Answer

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Vehicle Theft Deterrent Module, Vehicle Theft Deterrent Module harness is open or shorted, Vehicle Theft Deterrent 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: U2137 Cadillac indicates Lost Communications With Vehicle Theft Deterrent Module.
Common causes: Common causes include Faulty Vehicle Theft Deterrent Module, Vehicle Theft Deterrent Module harness is open or shorted, Vehicle Theft Deterrent 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 562

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 Jun 16, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U2137 Cadillac Description

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device. A loss of serial data communications Diagnostic Trouble Code (DTC) does not represent a failure of the devices that contain the stored code. The DTC will set when a supervised periodic message that includes the transmitter device availability has not been received.

OBDII Code U2137 Cadillac - Lost Communications With Vehicle Theft Deterrent Module - AutoCodes.com — U2137 Cadillac Code - Lost Communications With Vehicle Theft Deterrent Module

What does this mean?

What are the Possible Causes of the DTC U2137 Cadillac?

Faulty Vehicle Theft Deterrent Module
Vehicle Theft Deterrent Module harness is open or shorted
Vehicle Theft Deterrent Module circuit poor electrical connection

How to Fix the DTC U2137 Cadillac?

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 U2137 Cadillac 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.

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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 Cadillac Code

1. What are the common symptoms of OBDII code U2137 in a Cadillac related to the Vehicle Theft Deterrent Module?

The common symptoms include issues with the vehicle starting, the security indicator light flashing, and possible immobilization of the vehicle.

2. What are the typical causes of the U2137 code in a Cadillac?

The U2137 code is usually caused by faults in the wiring connections to the Vehicle Theft Deterrent Module, a malfunctioning module itself, or a communication error between the module and other vehicle systems.

3. How can I diagnose the U2137 code related to the Vehicle Theft Deterrent Module in my Cadillac?

Diagnosing the U2137 code involves using an OBDII scanner to retrieve the code, inspecting the wiring and connections to the module, checking for any corrosion or damage, and testing the module's functionality.

4. Can I drive my Cadillac with the U2137 code present?

It is not recommended to drive your Cadillac with the U2137 code present, as it can lead to potential issues with the vehicle's security system and affect its drivability.

5. How can I repair the U2137 code in my Cadillac?

To repair the U2137 code, you may need to replace the Vehicle Theft Deterrent Module if it is faulty, repair any damaged wiring or connections, and clear the code using an OBDII scanner.

6. Are there any DIY tips for fixing the U2137 code in a Cadillac?

While some basic inspections and checks can be done DIY, diagnosing and repairing the U2137 code related to the Vehicle Theft Deterrent Module may require advanced knowledge and tools, so it's best to consult a professional mechanic.

7. How much does it cost to fix the U2137 code in a Cadillac?

The cost of fixing the U2137 code can vary depending on the root cause of the issue, the labor rates in your area, and whether any parts need to be replaced. It's advisable to get a few quotes from different mechanics.

8. Can a faulty Vehicle Theft Deterrent Module cause other issues in my Cadillac?

Yes, a faulty Vehicle Theft Deterrent Module can potentially cause other issues in your Cadillac, such as intermittent starting problems, engine stalling, or draining the battery.

9. Is the U2137 code in a Cadillac a common problem?

The U2137 code related to the Vehicle Theft Deterrent Module is not extremely common, but it can occur in Cadillac vehicles due to various electrical and communication issues.

10. How can I prevent the U2137 code from appearing in my Cadillac?

To prevent the U2137 code, it's essential to regularly maintain your vehicle's electrical system, including checking the wiring connections, keeping the battery in good condition, and addressing any warning signs promptly.