AutoCodes – Generic – U110B

U110B Code - Lost Engine Coolant Message

Quick Answer

The Transmission Control Module (TCM) receives information from the Engine, Anti-Lock Brake System, and the Electronic Gear Shift control modules over the CAN C bus. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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: U110B indicates Lost Engine Coolant Message.
Common causes: Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module (TCM) harness is open or shorted, Transmission Control Module (TCM) 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 17,413

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 Apr 22, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code U110B Description

The Transmission Control Module (TCM) receives information from the Engine, Anti-Lock Brake System, and the Electronic Gear Shift control modules over the CAN C bus. The CAN C bus is a high speed communication bus that allows real time control capability between various controllers. Most messages are sent every 20 mSec, this means critical information can be shared between multiple controllers almost instantaneously. The CAN C bus is a two wire bus with a CAN (+) and a CAN (-) circuit. To reduce the potential of radio and other electrical noise interference, the CAN Bus circuit wiring is manufactured using a twisted pair configuration within the electrical wiring harness.

OBDII Code U110B - Lost Engine Coolant Message - AutoCodes.com — U110B Code - Lost Engine Coolant Message

What does this mean?

What are the Possible Causes of the DTC U110B?

Faulty Transmission Control Module (TCM)
Transmission Control Module (TCM) harness is open or shorted
Transmission Control Module (TCM) circuit poor electrical connection

How to Fix the DTC U110B?

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 U110B 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.

Need more information about the U110B code?

Need more information on how to fix the U110B code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the U110B code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

U110B BMW — Message Monitoring Torque Request DSC Alive Check
U110B Chrysler — Lost Engine Coolant Message
U110B Dodge — Lost Engine Coolant Message
U110B Jeep — Lost Engine Coolant Message
U110B RAM — Lost Engine Coolant Message

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 U110B Code

1. What are the common symptoms of OBDII code U110B (Lost Engine Coolant Message)?

- Common symptoms include a warning light on the dashboard indicating a loss of engine coolant message, increased engine temperature, and potential overheating.

2. What can cause the OBDII code U110B to trigger?

- The code U110B is triggered when the engine control module detects a loss of engine coolant message from the cooling system.

3. How can I diagnose the OBDII code U110B related to a lost engine coolant message?

- To diagnose this code, you can start by checking the coolant level in the reservoir, inspecting for any visible leaks in the cooling system, and testing the functionality of the coolant level sensor.

4. Can a malfunctioning coolant level sensor cause the OBDII code U110B to be set?

- Yes, a malfunctioning coolant level sensor can trigger the U110B code if it fails to accurately detect the coolant level in the system.

5. What are some repair tips for addressing the OBDII code U110B related to a lost engine coolant message?

- Repair tips include checking and topping up the coolant level, repairing any leaks in the cooling system, replacing a faulty coolant level sensor if needed, and clearing the error code with a diagnostic tool.

6. Is it safe to continue driving with the OBDII code U110B indicating a lost engine coolant message?

- It is not recommended to drive with the U110B code active, as it can lead to engine overheating and potential damage. It is best to address the issue promptly.

7. Can a disconnected or damaged coolant level sensor wire trigger the OBDII code U110B?

- Yes, a disconnected or damaged wire connecting the coolant level sensor can cause the U110B code to be set due to the inability to properly communicate the coolant level status.

8. Are there any known recalls or technical service bulletins related to the OBDII code U110B for lost engine coolant message?

- Check with your vehicle manufacturer or authorized service center for any recalls or technical service bulletins related to the U110B code for specific models.

9. How important is it to address the OBDII code U110B promptly?

- It is crucial to address the U110B code promptly to prevent potential engine damage from overheating and to ensure the proper functioning of the cooling system.

10. Can resetting the error code temporarily resolve the OBDII code U110B for a lost engine coolant message?

- Resetting the error code may temporarily clear the warning message, but it is important to investigate and address the underlying issue triggering the U110B code to prevent future problems.