AutoCodes – Dodge – U142B Dodge

U142B Dodge Code - implausible Data Received From Exhaust Valve 1

Quick Answer

The purpose of the Active Exhaust Valves are to reduce exhaust noise in order to meet pass-by noise regulations. Common causes include Faulty Active Exhaust Valve 1 Actuator, Active Exhaust Valve 1 Actuator harness is open or shorted, Active Exhaust Valve 1 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: U142B Dodge indicates implausible Data Received From Exhaust Valve 1.
Common causes: Common causes include Faulty Active Exhaust Valve 1 Actuator, Active Exhaust Valve 1 Actuator harness is open or shorted, Active Exhaust Valve 1 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 735

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 23, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U142B Dodge Description

The purpose of the Active Exhaust Valves are to reduce exhaust noise in order to meet pass-by noise regulations. The Active Exhaust Valves consist of two parts. First is the mechanical butterfly valves that are welded into the exhaust pipe on each bank. Mounted to each of these is a smart actuator. They are connected to the mechanical valves through a transmission spring. This is to help reduce heat from transferring between the mechanical butterfly valves and the actuators.
The Active Exhaust Valve actuators communicate with the Powertrain Control Module (PCM) over a LIN Bus circuit. The Active Exhaust Valve actuator 1 (left) and Active Exhaust Valve actuator 2 (right) each has a unique part number/internal ID. The PCM can identify each actuator location by this unique ID. The PCM sends a position command to the Active Exhaust Valve actuators based on engine torque, rpm and vehicle speed. The Active Exhaust Valve actuators move the butterfly valves to the commanded position. An internal Hall Effect sensor counts the pulses and determines 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 for any reason the calibration is unsuccessful, the actuators are self-diagnosing and report fault flags to the PCM over the LIN Bus.
If the valve position doesn't match a 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 the transmission spring is broken or missing, the actuator will continue to rotate indefinitely and set a fault. Also, if the mechanical valve is stuck and will not move, a fault will set.

OBDII Code U142B Dodge - implausible Data Received From Exhaust Valve 1 - AutoCodes.com — U142B Dodge Code - implausible Data Received From Exhaust Valve 1

What does this mean?

What are the Possible Causes of the DTC U142B Dodge?

Faulty Active Exhaust Valve 1 Actuator
Active Exhaust Valve 1 Actuator harness is open or shorted
Active Exhaust Valve 1 Actuator circuit poor electrical connection

How to Fix the DTC U142B 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 U142B 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 U142B Dodge Code

1. What are the common symptoms of OBDII code U142B Dodge?

The common symptoms of OBDII code U142B Dodge include engine misfires, rough idling, decreased fuel efficiency, and possibly a Check Engine light illuminated on the dashboard.

2. What can cause the OBDII code U142B Dodge to appear?

The OBDII code U142B Dodge, indicating implausible Data Received From Exhaust Valve 1, can be caused by issues such as a faulty exhaust valve sensor, wiring problems, or a malfunction in the engine control module.

3. How serious is the OBDII code U142B Dodge?

The OBDII code U142B Dodge should be addressed promptly as it can lead to poor engine performance and potential damage if left unresolved. It is recommended to have the issue diagnosed and repaired as soon as possible.

4. Can I continue driving with the OBDII code U142B Dodge present?

It is not recommended to continue driving with the OBDII code U142B Dodge present, as it can impact the overall performance of the vehicle and potentially cause further damage. It is best to address the issue promptly.

5. How can I diagnose the OBDII code U142B Dodge?

Diagnosing the OBDII code U142B Dodge typically involves using a diagnostic scanner to retrieve the code, checking the exhaust valve sensor and related wiring for any visible issues, and performing a thorough inspection of the exhaust system.

6. What are some repair tips for fixing the OBDII code U142B Dodge?

Repair tips for fixing the OBDII code U142B Dodge may include replacing the faulty exhaust valve sensor, repairing any damaged wiring, or resetting the engine control module to clear the code. It is recommended to consult a professional mechanic for accurate diagnosis and repair.

7. How much does it cost to repair the OBDII code U142B Dodge?

The cost of repairing the OBDII code U142B Dodge can vary depending on the specific cause of the issue, the labor rates in your area, and the cost of parts needed for the repair. It is best to obtain a few quotes from different mechanics to compare prices.

8. Can I reset the OBDII code U142B Dodge myself?

In some cases, you may be able to reset the OBDII code U142B Dodge yourself by using a diagnostic scanner to clear the code. However, it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. Will the OBDII code U142B Dodge affect my vehicle's emissions?

Yes, the OBDII code U142B Dodge can affect your vehicle's emissions by causing the engine to run inefficiently and potentially increasing harmful emissions. It is important to address the code to ensure your vehicle meets emissions standards.

10. How can I prevent the OBDII code U142B Dodge from reoccurring?

To prevent the OBDII code U142B Dodge from reoccurring, it is important to address the underlying issue causing the code, regularly maintain your vehicle according to the manufacturer's recommendations, and promptly address any engine performance issues that arise.