AutoCodes – Cadillac – U0106 Cadillac

U0106 Cadillac Code - Lost Communication With Glow Plug Control Module

Quick Answer

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug Control 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: U0106 Cadillac indicates Lost Communication With Glow Plug Control Module.
Common causes: Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug Control 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 613

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 Mar 30, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0106 Cadillac Description

Modules connected to the high speed General Motor Local Area Network (GMLAN) serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. The modules 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 module as an availability indication of the transmitter module. The supervision time-out period is 250 ms. Each message contains the identification number of the transmitter module. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Glow Plug Control Module has not been received.

OBDII Code U0106 Cadillac - Lost Communication With Glow Plug Control Module - AutoCodes.com — U0106 Cadillac Code - Lost Communication With Glow Plug Control Module

What does this mean?

What are the Possible Causes of the DTC U0106 Cadillac?

Faulty Glow Plug Control Module
Glow Plug Control Module harness is open or shorted
Glow Plug Control Module circuit poor electrical connection

How to Fix the DTC U0106 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 U0106 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 U0106 Cadillac Code

1. What are the common symptoms of OBDII code U0106 in a Cadillac related to the Glow Plug Control Module?

- Common symptoms include hard starting or no start condition, poor engine performance, and the glow plug indicator light staying illuminated.

2. What are some possible causes of the U0106 OBDII code indicating a lost communication with the Glow Plug Control Module in a Cadillac?

- Possible causes include wiring issues, a faulty glow plug control module, a malfunctioning engine control module (ECM), or a poor connection in the communication network.

3. How can I diagnose the U0106 code in my Cadillac indicating a communication problem with the Glow Plug Control Module?

- Use a diagnostic scanner to retrieve and analyze the trouble codes, inspect the wiring for any damage or loose connections, and test the glow plug control module and related components for proper functionality.

4. Can I still drive my Cadillac with the U0106 code for a lost communication with the Glow Plug Control Module?

- It is not recommended to drive the vehicle with this code present, as it may lead to starting issues or engine performance problems. Have the issue diagnosed and repaired as soon as possible.

5. Are there any DIY repair tips for fixing the U0106 code related to the Glow Plug Control Module in a Cadillac?

- DIY repairs may include checking and repairing any damaged wiring, ensuring all connections are secure, and replacing the glow plug control module if necessary. However, it is recommended to consult a professional for accurate diagnosis and repair.

6. How much does it typically cost to repair the U0106 code indicating a lost communication with the Glow Plug Control Module in a Cadillac?

- The cost of repair can vary depending on the exact cause of the issue. It may range from a few hundred dollars for simple fixes like wiring repairs to over a thousand dollars if major components need replacement.

7. Can a U0106 OBDII code in a Cadillac be caused by issues other than the Glow Plug Control Module?

- Yes, the communication loss indicated by the code could also be related to problems with the ECM, wiring harness, or other control modules in the vehicle's network.

8. Will resetting the OBDII code U0106 in my Cadillac make the issue go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the communication loss with the Glow Plug Control Module is not addressed, the code is likely to reappear.

9. Is it safe to continue driving my Cadillac if the U0106 code for the Glow Plug Control Module communication error is intermittent?

- It is not advisable to drive the vehicle with intermittent communication issues, as this can lead to unpredictable engine behavior and potential safety hazards. Seek professional diagnosis and repair promptly.

10. How can I prevent the U0106 code related to the Glow Plug Control Module from recurring in my Cadillac?

- Regular maintenance checks, ensuring proper wiring connections, and addressing any underlying electrical issues promptly can help prevent the code from reoccurring.