AutoCodes – Fiat – U11D9 Fiat

U11D9 Fiat Code - Lost Engine Off Time Message

Quick Answer

This diagnostic checks the availability of the engine off time signal which is sent by the Powertrain Control Module (PCM) via a Controller Area Network (CAN) message. Common causes include Faulty Powertrain Control Module (PCM), Faulty Transmission Control Module (TCM). 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 Fiat indicates Lost Engine Off Time Message.
Common causes: Common causes include Faulty Powertrain Control Module (PCM), Faulty Transmission Control Module (TCM).
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 509

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 May 03, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U11D9 Fiat Description

This diagnostic checks the availability of the engine off time signal which is sent by the Powertrain Control Module (PCM) via a Controller Area Network (CAN) message. The diagnostic checks the availability by checking the received value is not equal to the Signal Not Available (SNA) default value. When the signal is not available, the PCM sends a SNA default value to the Transmission Control Module (TCM). If the TCM reads this value then the Diagnostic Trouble Code (DTC) U11D9 is set.

OBDII Code U11D9 Fiat - Lost Engine Off Time Message - AutoCodes.com — U11D9 Fiat Code - Lost Engine Off Time Message

What does this mean?

What are the Possible Causes of the DTC U11D9 Fiat?

Faulty Powertrain Control Module (PCM)
Faulty Transmission Control Module (TCM)

How to Fix the DTC U11D9 Fiat?

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 U11D9 Fiat 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 U11D9 Fiat code?

Need more information on how to fix the U11D9 Fiat code? Get Access to Factory Service Manuals

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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 Fiat Code

1. What does the OBDII code U11D9 for Fiat mean?

The U11D9 code in Fiat vehicles indicates a "Lost Engine Off Time Message" error related to a communication issue with the engine control module.

2. What are the common symptoms of the U11D9 code in a Fiat?

Common symptoms of the U11D9 code may include the check engine light illuminating on the dashboard, issues with starting the vehicle, and potential loss of engine performance.

3. What are possible causes of the U11D9 code in a Fiat?

Potential causes of the U11D9 code include faulty wiring or connectors in the communication network, a malfunctioning engine control module, or software glitches.

4. How can I diagnose the U11D9 code in my Fiat?

Diagnosing the U11D9 code typically involves using an OBDII scanner to retrieve the code, checking the wiring and connectors for any visible damage, and performing a thorough inspection of the engine control module.

5. Can I still drive my Fiat with the U11D9 code present?

It is not recommended to drive your Fiat with the U11D9 code active, as it can lead to potential further damage or performance issues. It is best to address the issue promptly.

6. How can I repair the U11D9 code in my Fiat?

Repairing the U11D9 code may involve repairing or replacing damaged wiring or connectors, resetting the engine control module, or updating the software to address any glitches.

7. Is the U11D9 code a serious issue in a Fiat?

While the U11D9 code may not always indicate a critical problem, it is still important to address it promptly to prevent any potential issues with vehicle performance or safety.

8. Can I clear the U11D9 code in my Fiat with an OBDII scanner?

Yes, you can use an OBDII scanner to clear the U11D9 code in your Fiat after performing the necessary repairs or diagnostics to address the underlying cause.

9. How much does it cost to fix the U11D9 code in a Fiat?

The cost of fixing the U11D9 code in a Fiat can vary depending on the specific cause of the issue, the extent of repairs needed, and labor costs at the repair shop.

10. Will the U11D9 code reappear after clearing it from my Fiat?

If the underlying issue causing the U11D9 code is not properly addressed, there is a possibility that the code may reappear after clearing it. It is crucial to diagnose and repair the root cause to prevent recurrence.