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U1140 Chrysler Code - Lost Communication With Active Exhaust Valve 2

Quick Answer

The U1140 Chrysler code indicates that there is a communication problem with Active Exhaust Valve 2 in the vehicle. Common causes include Faulty wiring or connectors in the active exhaust system, Malfunctioning Active Exhaust Valve 2, Corrosion or damage to the electrical components related to the active exhaust system. 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
U1140 Chrysler indicates Lost Communication With Active Exhaust Valve 2.
Common causes
Common causes include Faulty wiring or connectors in the active exhaust system, Malfunctioning Active Exhaust Valve 2, Corrosion or damage to the electrical components related to the active exhaust system.
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 07, 2024
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Code U1140 Chrysler Description

The U1140 Chrysler code indicates that there is a communication problem with Active Exhaust Valve 2 in the vehicle. The active exhaust system is responsible for controlling the exhaust flow and sound of the vehicle based on driving conditions. When communication is lost with the active exhaust valve, it can lead to issues with exhaust flow regulation, potentially affecting engine performance and emissions.

OBDII Code U1140 Chrysler - Lost Communication With Active Exhaust Valve 2
U1140 Chrysler Code - Lost Communication With Active Exhaust Valve 2

Common Causes of U1140 Chrysler

  1. Faulty wiring or connectors in the active exhaust system
  2. Malfunctioning Active Exhaust Valve 2
  3. Corrosion or damage to the electrical components related to the active exhaust system
  4. Software issues or communication errors within the vehicle's computer system
  5. Water or debris entering the active exhaust system

Symptoms of U1140 Chrysler

  1. Check engine light illuminated on the dashboard
  2. Decreased fuel economy
  3. Loss of power during acceleration
  4. Rough idle or engine misfires
  5. Failure to pass emissions tests

How to Fix U1140 Chrysler

  1. Begin by conducting a visual inspection of the active exhaust system components, checking for any visible damage or corrosion.
  2. Use a diagnostic scanner to retrieve the specific trouble code and further diagnose the issue with Active Exhaust Valve 2.
  3. Test the wiring and connectors for continuity and repair or replace any damaged components.
  4. If the Active Exhaust Valve 2 is faulty, replace it with a new OEM part to ensure proper functionality.
  5. Clear the trouble code from the vehicle's computer system and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix U1140 Chrysler

The cost of repairing a U1140 Chrysler code related to a lost communication with Active Exhaust Valve 2 can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Typically, the repair costs can range from $200 to $500, including parts and labor. It is essential to consult with a professional technician to get an accurate estimate based on the specific diagnosis and repair needed for your vehicle.

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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 U1140 Chrysler Code

1. What are the common symptoms of OBDII code U1140 Chrysler (Lost Communication With Active Exhaust Valve 2)?

- Common symptoms include issues with the active exhaust system functionality, decreased engine performance, and illuminated warning lights on the dashboard.

2. What are the potential causes of OBDII code U1140 Chrysler?

- The code U1140 Chrysler can be triggered by a faulty active exhaust valve 2, damaged wiring or connectors related to the valve, or a communication breakdown between the valve and the vehicle's ECM.

3. How can I diagnose the cause of OBDII code U1140 Chrysler?

- Diagnosis typically involves inspecting the active exhaust valve 2, checking the wiring and connectors for any damage, and using a diagnostic scanner to communicate with the ECM for further troubleshooting.

4. What are some repair tips for resolving OBDII code U1140 Chrysler?

- Repair tips may include repairing or replacing the faulty active exhaust valve 2, repairing any damaged wiring or connectors, and clearing the code with a diagnostic scanner after the repairs are completed.

5. Can driving with OBDII code U1140 Chrysler cause further damage to the vehicle?

- Continuing to drive with code U1140 Chrysler may lead to decreased fuel efficiency, engine performance issues, and potential damage to other components of the active exhaust system.

6. Is it safe to ignore OBDII code U1140 Chrysler?

- Ignoring the code may result in ongoing issues with the active exhaust system and could potentially cause damage to other engine components, so it is recommended to address the issue promptly.

7. How much does it typically cost to repair OBDII code U1140 Chrysler?

- The cost of repairing OBDII code U1140 Chrysler can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

8. Can I reset OBDII code U1140 Chrysler without fixing the underlying issue?

- While you can clear the code temporarily with a diagnostic scanner, it is important to address the underlying cause of the issue to prevent the code from reoccurring in the future.

9. Are there any preventive measures to avoid OBDII code U1140 Chrysler?

- Regular maintenance checks, including inspecting the active exhaust system components and wiring, can help prevent issues that may trigger code U1140 Chrysler.

10. How long does it typically take to repair OBDII code U1140 Chrysler?

- The repair time for OBDII code U1140 Chrysler can vary depending on the specific cause of the issue and the complexity of the repairs needed, but it may take a few hours to a full day to complete the repair process.

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