AutoCodes – Chrysler – U142C Chrysler

U142C Chrysler Code - implausible Data Received From Exhaust Valve 2

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 2 Actuator, Active Exhaust Valve 2 Actuator harness is open or shorted, Active Exhaust Valve 2 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: U142C Chrysler indicates implausible Data Received From Exhaust Valve 2.
Common causes: Common causes include Faulty Active Exhaust Valve 2 Actuator, Active Exhaust Valve 2 Actuator harness is open or shorted, Active Exhaust Valve 2 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 460

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 U142C Chrysler 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 U142C Chrysler - implausible Data Received From Exhaust Valve 2 - AutoCodes.com — U142C Chrysler Code - implausible Data Received From Exhaust Valve 2

What does this mean?

What are the Possible Causes of the DTC U142C Chrysler?

Faulty Active Exhaust Valve 2 Actuator
Active Exhaust Valve 2 Actuator harness is open or shorted
Active Exhaust Valve 2 Actuator circuit poor electrical connection

How to Fix the DTC U142C Chrysler?

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 U142C Chrysler 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 U142C Chrysler Code

1. What are the common symptoms of OBDII code U142C in a Chrysler indicating implausible data received from exhaust valve 2?

The common symptoms include rough idle, reduced engine performance, and potentially a check engine light on the dashboard.

2. What are the possible causes of OBDII code U142C in a Chrysler related to exhaust valve 2?

Potential causes may include a faulty exhaust valve position sensor, wiring issues, or a problem with the engine control module (ECM).

3. How can I diagnose OBDII code U142C in a Chrysler specifically related to exhaust valve 2?

Diagnosis typically involves using a scan tool to retrieve the code, checking the exhaust valve sensor's connections and wiring, and testing the sensor's functionality.

4. Is it safe to drive my Chrysler with OBDII code U142C related to exhaust valve 2?

It is not recommended to drive the vehicle with this code present, as it can lead to further engine damage or performance issues. It's best to address the issue promptly.

5. What steps can I take to repair OBDII code U142C in a Chrysler associated with exhaust valve 2?

Repair may involve replacing the exhaust valve position sensor, repairing any damaged wiring, or reprogramming the engine control module (ECM) if necessary.

6. Can a DIY enthusiast fix OBDII code U142C in a Chrysler related to exhaust valve 2?

Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to address this issue themselves by following repair guides or tutorials.

7. How much does it typically cost to repair OBDII code U142C in a Chrysler concerning exhaust valve 2 at a professional auto repair shop?

Repair costs can vary depending on the exact cause of the issue, but it is advisable to budget for sensor replacement, labor costs, and potential diagnostic fees.

8. Will resetting the check engine light resolve OBDII code U142C in a Chrysler related to exhaust valve 2?

Simply resetting the check engine light will not fix the underlying issue causing the code. It's crucial to diagnose and repair the problem to prevent further issues.

9. Can extreme weather conditions affect the occurrence of OBDII code U142C in a Chrysler tied to exhaust valve 2?

Extreme temperatures or weather conditions may potentially impact sensor performance, wiring integrity, or valve operation, leading to the triggering of this code.

10. How often should the exhaust valve position sensor be inspected to prevent OBDII code U142C in a Chrysler?

Regular maintenance checks and inspections, such as during scheduled services or when experiencing related symptoms, can help prevent issues leading to the occurrence of this code.