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U0167 Chevrolet Code - Lost Communication With Immobilizer Control Module

Quick Answer

The U0167 code for Chevrolet vehicles indicates that there has been a communication failure between the vehicle's engine control module (ECM) and the immobilizer control module. Common causes include Faulty wiring connections between the ECM and immobilizer control module, Malfunctioning immobilizer control module, ECM software issues. 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
U0167 Chevrolet indicates Lost Communication With Immobilizer Control Module.
Common causes
Common causes include Faulty wiring connections between the ECM and immobilizer control module, Malfunctioning immobilizer control module, ECM software issues.
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 U0167 Chevrolet Description

The U0167 code for Chevrolet vehicles indicates that there has been a communication failure between the vehicle's engine control module (ECM) and the immobilizer control module. The immobilizer control module is responsible for recognizing the key's unique code and allowing the engine to start. When communication is lost with the immobilizer control module, the vehicle may not start, or it may start and then immediately shut off.

OBDII Code U0167 Chevrolet - Lost Communication With Immobilizer Control Module
U0167 Chevrolet Code - Lost Communication With Immobilizer Control Module

Common Causes of U0167 Chevrolet

  1. Faulty wiring connections between the ECM and immobilizer control module
  2. Malfunctioning immobilizer control module
  3. ECM software issues
  4. Corrosion or damage to the wiring harness
  5. Water damage to the control modules

Symptoms of U0167 Chevrolet

  1. Engine cranks but does not start
  2. Engine starts but immediately shuts off
  3. Key fob not recognized by the vehicle
  4. Security light on the dashboard stays illuminated
  5. Engine immobilized and unable to start

How to Fix U0167 Chevrolet

  1. Perform a thorough inspection of the wiring harness between the ECM and immobilizer control module for any damage or corrosion.
  2. Test the immobilizer control module to determine if it is functioning properly.
  3. Check and update the ECM software if necessary.
  4. Replace any damaged wiring or connectors.
  5. Reset the immobilizer system and reprogram any keys if needed.

Cost to Fix U0167 Chevrolet

The cost of repairing a U0167 code on a Chevrolet vehicle can vary depending on the exact cause of the issue and the labor rates at the repair shop. In general, the parts required for this repair, such as a new immobilizer control module or wiring harness, can range from $200 to $500. The labor cost for diagnosing and repairing this issue can range from $150 to $400, depending on the shop's hourly rates and the complexity of the repair. It is advisable to contact local repair shops for a more accurate estimate based on your specific vehicle and location.

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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 U0167 Chevrolet Code

1. What are the common symptoms of OBDII code U0167 in a Chevrolet related to lost communication with the immobilizer control module?

- Common symptoms include difficulty starting the vehicle, engine stalling, and the security light illuminating on the dashboard.

2. What are some possible causes of the U0167 code in a Chevrolet indicating a communication problem with the immobilizer control module?

- The code may be triggered by a faulty immobilizer control module, wiring issues, a defective key fob, or a problem with the vehicle's security system.

3. How can I diagnose the U0167 code in my Chevrolet if I suspect a communication issue with the immobilizer control module?

- To diagnose the issue, you can use an OBDII scanner to read the code, check for any related trouble codes, inspect the wiring connections, and test the immobilizer control module for proper functioning.

4. Can I drive my Chevrolet with the U0167 code related to the immobilizer control module communication problem?

- It is not recommended to drive the vehicle with the U0167 code present, as it can lead to potential security issues and possible stalling of the engine while driving.

5. What are some repair tips for fixing the U0167 code in a Chevrolet due to lost communication with the immobilizer control module?

- Repair tips include checking and repairing any damaged wiring, resetting the immobilizer system, reprogramming the key fob, or replacing the immobilizer control module if necessary.

6. How much does it typically cost to repair the U0167 code in a Chevrolet caused by a communication problem with the immobilizer control module?

- The cost of repair can vary depending on the exact cause of the issue, but it may range from $100 to $500 for parts and labor.

7. Is it possible to reset the U0167 code in a Chevrolet related to the immobilizer control module without professional help?

- In some cases, you may be able to reset the code by disconnecting the vehicle's battery for a few minutes, but it is recommended to have a professional diagnose and fix the underlying issue.

8. How can I prevent the recurrence of the U0167 code in my Chevrolet after fixing the communication problem with the immobilizer control module?

- To prevent the code from reoccurring, ensure that all wiring connections are secure, regularly maintain the vehicle's security system, and avoid using damaged key fobs.

9. Can a DIY enthusiast with basic automotive knowledge fix the U0167 code in a Chevrolet caused by lost communication with the immobilizer control module?

- While some simple checks and resets can be done by a DIY enthusiast, diagnosing and repairing the underlying issue may require professional expertise and specialized tools.

10. Are there any safety precautions to keep in mind when dealing with the U0167 code in a Chevrolet related to the immobilizer control module?

- When working on the immobilizer system, always disconnect the vehicle's battery, follow proper safety procedures, and consider seeking help from a qualified technician to avoid any risks or further damage.

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