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U11D9 Chrysler Code - Lost Engine Off Time Message

Quick Answer

The U11D9 Chrysler code refers to a “Lost Engine Off Time Message” which indicates a communication issue within the vehicle's network. Common causes include Faulty wiring connections, Malfunctioning ECM, Communication network 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
U11D9 Chrysler indicates Lost Engine Off Time Message.
Common causes
Common causes include Faulty wiring connections, Malfunctioning ECM, Communication network 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 10, 2024
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Code U11D9 Chrysler Description

The U11D9 Chrysler code refers to a “Lost Engine Off Time Message” which indicates a communication issue within the vehicle's network. This code typically means that the engine control module (ECM) has not received a message it was expecting when the engine was turned off. This can result in a variety of issues that can affect the vehicle's performance and overall functionality.

OBDII Code U11D9 Chrysler - Lost Engine Off Time Message
U11D9 Chrysler Code - Lost Engine Off Time Message

Common Causes of U11D9 Chrysler

  1. Faulty wiring connections
  2. Malfunctioning ECM
  3. Communication network issues
  4. Software glitch
  5. Electrical system issues

Symptoms of U11D9 Chrysler

  1. Check engine light illuminated
  2. Difficulty starting the engine
  3. Rough idling or stalling
  4. Reduced fuel efficiency
  5. Communication errors with other vehicle systems

How to Fix U11D9 Chrysler

  1. Diagnose the issue by using a professional diagnostic scanner to retrieve the specific trouble codes and pinpoint the source of the problem.
  2. Inspect wiring connections for any signs of damage or corrosion and repair or replace as necessary.
  3. Test the ECM for functionality and replace if deemed faulty.
  4. Check and repair any communication network issues within the vehicle.
  5. Update the software if a glitch is identified as the cause of the problem.

Cost to Fix U11D9 Chrysler

The cost of repairing a U11D9 Chrysler code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the repair costs for this type of problem can range from $200 to $500, including parts and labor. However, it's important to note that labor rates at auto repair shops can vary significantly based on location, vehicle make and model, and the expertise of the technicians. It is recommended to obtain a detailed estimate from a reliable auto repair shop to get a more accurate cost assessment.

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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 U11D9 Chrysler Code

1. What does the OBDII code U11D9 mean on a Chrysler?

U11D9 indicates a communication issue where the Powertrain Control Module (PCM) has lost the Engine Off Time message from another module on the vehicle’s network.

2. What are the common symptoms of the U11D9 code?

Symptoms may include a check engine light, issues with vehicle start/stop functionality, inaccurate system time tracking, or no noticeable symptoms at all.

3. What causes the U11D9 code to appear on a Chrysler?

Possible causes include faulty wiring or connectors, a malfunctioning PCM or Body Control Module (BCM), software issues, or a problem with the vehicle’s communication network.

4. Can a loose connection trigger the U11D9 code on a Chrysler?

Yes, loose or damaged wiring and connectors in the communication network can disrupt signals and trigger the U11D9 code.

5. How do you diagnose the U11D9 code on a Chrysler vehicle?

A technician will inspect wiring and connectors, use a scan tool to check for related codes, and test the communication network between the PCM and BCM.

6. Can the U11D9 code cause drivability issues?

Typically, U11D9 does not cause drivability issues, but system functionalities like auto start/stop or time-dependent features may be affected.

7. How do you fix the U11D9 code on a Chrysler?

Repairs may include fixing damaged wiring, cleaning or reconnecting connectors, reprogramming or updating module software, or replacing a faulty module.

8. Is it safe to drive with the U11D9 code on a Chrysler?

Yes, it is generally safe to drive. However, it's best to address the issue promptly to ensure all systems function properly.

9. Can a software update resolve the U11D9 code?

Yes, if the code is related to a software glitch or outdated module programming, a software update can resolve the issue.

10. What tools are needed to troubleshoot the U11D9 code on a Chrysler?

You’ll need an OBDII scan tool capable of reading Chrysler-specific codes, a multimeter for testing wiring, and potentially a module reprogramming tool.

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