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U110B Chrysler Code - Lost Engine Coolant Message

Quick Answer

The U110B diagnostic trouble code for Chrysler vehicles indicates a "Lost Engine Coolant Message." This code is typically related to a communication issue between the engine control module (ECM) and the body control module (BCM) regarding the engine coolant level or temperature. Common causes include Faulty coolant level sensor: A malfunctioning coolant level sensor can prevent the ECM from sending the correct message to the BCM, Wiring issues: Corroded or damaged wiring connections between the ECM and BCM can disrupt communication and trigger this code, ECM or BCM failure: A failure in either the ECM or BCM can lead to communication errors and result in the "Lost Engine Coolant Message" code. 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 Chrysler indicates Lost Engine Coolant Message.
Common causes
Common causes include Faulty coolant level sensor: A malfunctioning coolant level sensor can prevent the ECM from sending the correct message to the BCM, Wiring issues: Corroded or damaged wiring connections between the ECM and BCM can disrupt communication and trigger this code, ECM or BCM failure: A failure in either the ECM or BCM can lead to communication errors and result in the "Lost Engine Coolant Message" code.
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 Aug 18, 2024
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Code U110B Chrysler Description

The U110B diagnostic trouble code for Chrysler vehicles indicates a "Lost Engine Coolant Message." This code is typically related to a communication issue between the engine control module (ECM) and the body control module (BCM) regarding the engine coolant level or temperature. When this code is triggered, it means that the BCM did not receive the expected message from the ECM regarding the engine coolant status. This can lead to potential issues with engine cooling, which can have detrimental effects on the overall performance and longevity of the vehicle.

OBDII Code U110B Chrysler - Lost Engine Coolant Message
U110B Chrysler Code - Lost Engine Coolant Message

Common Causes of U110B Chrysler

  1. Faulty coolant level sensor: A malfunctioning coolant level sensor can prevent the ECM from sending the correct message to the BCM.
  2. Wiring issues: Corroded or damaged wiring connections between the ECM and BCM can disrupt communication and trigger this code.
  3. ECM or BCM failure: A failure in either the ECM or BCM can lead to communication errors and result in the "Lost Engine Coolant Message" code.
  4. Software issues: Software glitches or updates can sometimes cause communication errors between the modules.

Symptoms of U110B Chrysler

  1. Engine overheating: The most common symptom associated with this code is engine overheating, as the lack of proper coolant monitoring can lead to inefficient cooling.
  2. Low coolant warning: The vehicle may display a warning message indicating low coolant levels, even if the coolant level is adequate.
  3. Poor engine performance: In some cases, the vehicle may experience decreased engine performance due to improper coolant levels or temperature.
  4. Check engine light: The check engine light may illuminate on the dashboard, signaling a problem with the coolant system.

How to Fix U110B Chrysler

  1. Check coolant levels: Start by checking the coolant levels in the vehicle's reservoir and radiator to ensure they are at the proper levels.
  2. Inspect coolant level sensor: Inspect the coolant level sensor for any signs of damage or corrosion. Replace if necessary.
  3. Check wiring connections: Inspect the wiring connections between the ECM and BCM for any damage or loose connections. Repair or replace as needed.
  4. Perform module reset: Reset the ECM and BCM to clear any stored error codes and restore proper communication.
  5. Test drive and monitor: After completing the repairs, test drive the vehicle and monitor the coolant levels and temperature to ensure the issue has been resolved.

Cost to Fix U110B Chrysler

The typical repair costs for addressing a "Lost Engine Coolant Message" code can vary depending on the specific cause of the issue. In general, the cost of parts and labor for this repair can range from $100 to $300. However, it's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your vehicle make and model.

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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 U110B Chrysler Code

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

The common symptoms include sporadic or constant alerts indicating a lost engine coolant message, which may appear on the dashboard or through the vehicle's diagnostic system.

2. What can cause the U110B code (Lost Engine Coolant Message) in a Chrysler vehicle?

The U110B code is often triggered by a faulty engine coolant level sensor, a wiring issue related to the sensor, or a malfunction in the vehicle's electronic control unit (ECU).

3. How serious is the U110B code (Lost Engine Coolant Message) in a Chrysler car?

While the U110B code itself may not directly affect the vehicle's drivability, it is crucial not to ignore it as it indicates a potential problem with the engine coolant system that can lead to overheating and engine damage if left unresolved.

4. How can I diagnose the U110B code (Lost Engine Coolant Message) in my Chrysler vehicle?

Diagnosing the U110B code typically involves checking the engine coolant level, inspecting the coolant level sensor and its wiring, and using a diagnostic scanner to read and clear the code for further testing.

5. Can I continue driving my Chrysler car with the U110B code (Lost Engine Coolant Message) present?

It is not recommended to continue driving with the U110B code active, as it indicates an issue with the engine coolant system that could potentially lead to overheating and other serious engine problems.

6. How can I repair the U110B code (Lost Engine Coolant Message) in my Chrysler vehicle?

Repairing the U110B code often involves replacing the faulty engine coolant level sensor, repairing any damaged wiring, or addressing any issues with the electronic control unit (ECU) that may be causing the alert.

7. Is it possible to reset the U110B code (Lost Engine Coolant Message) without repairing the issue?

While you can clear the U110B code using a diagnostic scanner, it is important to address the underlying problem causing the code to prevent potential engine damage and ensure the vehicle's proper operation.

8. Can a DIY enthusiast fix the U110B code (Lost Engine Coolant Message) issue in a Chrysler vehicle?

Depending on your mechanical skills and access to tools, you may be able to replace the engine coolant level sensor or repair wiring issues causing the U110B code. However, professional diagnosis and repair are recommended for accurate and lasting solutions.

9. Will the U110B code (Lost Engine Coolant Message) affect my Chrysler's fuel efficiency?

While the U110B code itself may not directly impact fuel efficiency, ignoring the underlying engine coolant system issue can lead to overheating, which may affect the engine's performance and fuel consumption.

10. How much does it typically cost to repair the U110B code (Lost Engine Coolant Message) in a Chrysler vehicle?

The cost of repairing the U110B code can vary depending on the exact cause of the issue, the parts needed for replacement or repair, and labor costs. It is advisable to consult a mechanic or dealership for an accurate estimate.

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