AutoCodes – Dodge – U113F Dodge

U113F Dodge Code - Lost Communication With Active Exhaust Valve 1

Quick Answer

The purpose of the Active Exhaust Valves is to reduce exhaust noise in order to comply with pass-by noise regulations. Common causes include Faulty Active Exhaust Valve Actuator, Active Exhaust Valve Actuator harness is open or shorted, Active Exhaust Valve Actuator circuit poor electrical connection. 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: U113F Dodge indicates Lost Communication With Active Exhaust Valve 1.
Common causes: Common causes include Faulty Active Exhaust Valve Actuator, Active Exhaust Valve Actuator harness is open or shorted, Active Exhaust Valve Actuator circuit poor electrical connection.
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 11,253

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 Jul 02, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U113F Dodge Description

The purpose of the Active Exhaust Valves is to reduce exhaust noise in order to comply with pass-by noise regulations. The Active Exhaust Valves system consists of two main components. The first is the mechanical butterfly valves, which are welded into the exhaust pipe on each bank. Attached to each valve is a smart actuator. These are connected to the mechanical valves via a transmission spring to help reduce heat transfer from the butterfly valves to the actuators.
The Active Exhaust Valve actuators communicate with the Powertrain Control Module (PCM) over a LIN Bus circuit. Each Active Exhaust Valve actuator, one for the left (actuator 1) and one for the right (actuator 2), has a unique part number/internal ID. The PCM can identify each actuator's location by this unique ID. Based on engine torque, rpm, and vehicle speed, the PCM sends position commands to the Active Exhaust Valve actuators. These actuators then move the butterfly valves to the commanded positions. An internal Hall Effect sensor counts the pulses to determine the valve position. The valve actuators are calibrated at every Key-ON event; the PCM sends full open and full closed commands and checks the actual position against the commanded position. If calibration is unsuccessful for any reason, the actuators self-diagnose and report fault flags to the PCM over the LIN Bus.
If the valve position does not match the predetermined calibration, a performance code is set, and the valves will default to the full open position. If an actuator is not attached to the mechanical valve, or if the transmission spring is broken or missing, the actuator will continue to rotate indefinitely and set a fault. Additionally, if the mechanical valve is stuck and cannot move, a fault will be set.

OBDII Code U113F Dodge - Lost Communication With Active Exhaust Valve 1 - AutoCodes.com — U113F Dodge Code - Lost Communication With Active Exhaust Valve 1

What does this mean?

What are the Possible Causes of the DTC U113F Dodge?

Faulty Active Exhaust Valve Actuator
Active Exhaust Valve Actuator harness is open or shorted
Active Exhaust Valve Actuator circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC U113F Dodge?

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 U113F Dodge 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.

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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 U113F Dodge Code

1. What are the common symptoms of OBDII code U113F in a Dodge related to lost communication with active exhaust valve 1?

When this code is present, you may experience issues with the active exhaust system, such as abnormal exhaust noises, reduced engine performance, or the active exhaust valve being stuck in a particular position.

2. What are some potential causes of OBDII code U113F in a Dodge indicating lost communication with the active exhaust valve 1?

Possible causes include a faulty active exhaust valve actuator, damaged wiring or connectors in the exhaust system, a malfunctioning exhaust valve control module, or a communication error within the vehicle's network.

3. How can I diagnose the source of the problem when encountering OBDII code U113F in a Dodge?

To diagnose the issue, you may need to perform a thorough inspection of the active exhaust system components, check for any visible damage to wiring or connectors, and use a diagnostic scanner to pinpoint the exact location of the communication breakdown.

4. Can I continue driving my Dodge with OBDII code U113F related to the active exhaust valve issue?

It is not recommended to drive your vehicle with this code present, as it can lead to further damage to the exhaust system or engine components. It is best to address the problem promptly to prevent any potential safety hazards.

5. How can I repair OBDII code U113F in a Dodge indicating lost communication with the active exhaust valve 1?

Repair steps may include replacing the faulty active exhaust valve actuator, repairing or replacing damaged wiring or connectors, reprogramming the exhaust valve control module, or resetting the communication network within the vehicle.

6. Is it possible to reset the OBDII code U113F in a Dodge without fixing the underlying issue?

While you can clear the code temporarily using a diagnostic scanner, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure proper functionality of the active exhaust system.

7. Are there any preventive maintenance tips to avoid encountering OBDII code U113F in a Dodge related to the active exhaust valve communication problem?

Regularly inspecting the active exhaust system components, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the occurrence of this code in your Dodge.

8. Can extreme weather conditions affect the active exhaust system and trigger OBDII code U113F in a Dodge?

Yes, extreme temperatures or moisture levels can potentially impact the active exhaust system's components, leading to communication errors and triggering the U113F code. It is essential to keep the system well-maintained in such conditions.

9. How long does it typically take to repair OBDII code U113F related to lost communication with active exhaust valve 1 in a Dodge?

The repair time can vary depending on the exact cause of the issue and the extent of the repair needed. It is advisable to consult a professional mechanic for an accurate diagnosis and repair estimate.

10. Can a DIY enthusiast with basic automotive knowledge fix OBDII code U113F in a Dodge by themselves?

While some simple repairs, such as checking for loose connections or damaged wiring, can be done by DIY enthusiasts, diagnosing and repairing complex issues related to the active exhaust system may require professional expertise and specialized tools.