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Engine-Codes – Generic – U0119

U0119 Code - Lost Communication With Fuel Cell Control Module

Quick Answer

The U0119 code indicates that the vehicle has lost communication with the Fuel Cell Control Module (FCCM). Common causes include Faulty wiring or connectors leading to the FCCM, Corrosion or damage to the FCCM itself, Software or firmware issues within the FCCM. 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
U0119 indicates Lost Communication With Fuel Cell Control Module.
Common causes
Common causes include Faulty wiring or connectors leading to the FCCM, Corrosion or damage to the FCCM itself, Software or firmware issues within the FCCM.
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 19, 2024
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Code U0119 Description

The U0119 code indicates that the vehicle has lost communication with the Fuel Cell Control Module (FCCM). The FCCM is responsible for monitoring and controlling various functions related to the fuel cell system, such as fuel delivery, emissions, and performance optimization. When communication is lost with the FCCM, it can lead to a variety of issues with the vehicle's fuel system, potentially impacting its overall performance and efficiency.

OBDII Code U0119 - Lost Communication With Fuel Cell Control Module
U0119 Code - Lost Communication With Fuel Cell Control Module

Common Causes of U0119

  1. Faulty wiring or connectors leading to the FCCM.
  2. Corrosion or damage to the FCCM itself.
  3. Software or firmware issues within the FCCM.
  4. Electrical interference from other components or systems.
  5. Vehicle collision or impact that may have damaged the FCCM or its connections.

Symptoms of U0119

  1. Check engine light illuminated on the dashboard.
  2. Decreased fuel efficiency.
  3. Engine misfires or hesitation during acceleration.
  4. Difficulty starting the vehicle.
  5. Inconsistent or erratic engine performance.

How to Fix U0119

  1. Begin by conducting a thorough visual inspection of the wiring and connectors related to the FCCM. Repair or replace any damaged or corroded components.
  2. Use a diagnostic scan tool to reset the communication link between the vehicle's computer system and the FCCM.
  3. Check for any software updates or reprogramming that may be required for the FCCM.
  4. If the FCCM itself is determined to be faulty, it will need to be replaced with a new unit.
  5. After completing the repair, clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix U0119

The cost of repairing a lost communication issue with the Fuel Cell Control Module can vary depending on the extent of the damage and the specific components that need to be replaced. In general, the cost of parts for this repair could range from $200 to $500, with labor costs adding an additional $100 to $200. Overall, the total repair cost could fall in the range of $300 to $700. Keep in mind that labor rates and part prices can fluctuate, so it's advisable to consult with a qualified mechanic for a more accurate estimate based on your vehicle's make and model. Labor rates typically range from $80 to $150 per hour, but can be higher in certain locations or at dealerships.

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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 U0119 Code

1. What are the common symptoms of OBDII code U0119 (Lost Communication With Fuel Cell Control Module)?

- Common symptoms include issues with starting the vehicle, decreased engine performance, and illuminated dashboard warning lights.

2. What are the possible causes of OBDII code U0119?

- The code U0119 can be caused by a faulty fuel cell control module, damaged wiring or connectors, a weak or dead battery, or a communication network issue.

3. How can I diagnose the OBDII code U0119?

- Diagnosing the code U0119 usually involves using a diagnostic scanner to retrieve the trouble codes, checking the fuel cell control module and related components for any visible damage, and testing the communication network.

4. Can a DIYer repair OBDII code U0119 at home?

- Repairing the code U0119 may require advanced diagnostic tools and knowledge, so it is recommended to seek professional help. However, checking for loose connections or damaged wiring can be attempted by DIYers.

5. What are some tips for repairing OBDII code U0119?

- Tips for repairing the code U0119 include ensuring all connectors are properly connected, checking for any corrosion on electrical terminals, and following the manufacturer's diagnostic procedures.

6. Is it safe to continue driving with OBDII code U0119 present?

- It is not recommended to drive with the code U0119 present, as it can lead to further damage to the fuel cell control module and potentially affect the vehicle's performance and safety.

7. How much does it typically cost to repair OBDII code U0119?

- The cost of repairing the code U0119 can vary depending on the underlying cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

8. Can a bad fuel cell control module cause OBDII code U0119?

- Yes, a faulty fuel cell control module is one of the common causes of OBDII code U0119, as it can lead to a loss of communication between the module and other vehicle systems.

9. Will disconnecting the battery reset OBDII code U0119?

- Disconnecting the battery may temporarily clear the code U0119, but if the underlying issue is not addressed, the code is likely to reappear once the vehicle is driven and the system runs its diagnostic checks.

10. How long does it take to repair OBDII code U0119?

- The time required to repair the code U0119 can vary based on the cause of the issue and the availability of parts. In most cases, it may take a few hours to a day for professional technicians to diagnose and repair the problem.

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