Engine-CodesGeneric – U142C

U142C Code - implausible Data Received From Exhaust Valve 2

Quick Answer

The U142C code indicates that the vehicle's onboard computer has detected implausible data being received from Exhaust Valve 2. Common causes include Faulty exhaust valve, Malfunctioning exhaust valve position sensor, Wiring or connection issues. 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 indicates implausible Data Received From Exhaust Valve 2.
Common causes
Common causes include Faulty exhaust valve, Malfunctioning exhaust valve position sensor, Wiring or connection issues.
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.
Table of contents Created and updated by William Orellana on Sep 11, 2024
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Code U142C Description

The U142C code indicates that the vehicle's onboard computer has detected implausible data being received from Exhaust Valve 2. This could point to a problem with the exhaust valve itself, the sensor monitoring it, or the wiring and connections between them. The exhaust valve is a crucial component of the vehicle's exhaust system, responsible for controlling the flow of exhaust gases out of the engine. If the data being received from the exhaust valve is inaccurate or inconsistent, it can lead to a variety of performance issues and potentially cause long-term damage to the engine and emissions system.

OBDII Code U142C - implausible Data Received From Exhaust Valve 2
U142C Code - implausible Data Received From Exhaust Valve 2

Common Causes of U142C

  1. Faulty exhaust valve
  2. Malfunctioning exhaust valve position sensor
  3. Wiring or connection issues
  4. Corrosion or damage to the exhaust valve components
  5. Software glitches in the onboard computer system

Symptoms of U142C

  1. Rough idling
  2. Engine misfires
  3. Decreased power and acceleration
  4. Poor fuel efficiency
  5. Limp mode activation

How to Fix U142C

  1. Begin by conducting a visual inspection of the exhaust valve and its surrounding components to check for any visible damage or corrosion.
  2. Use a diagnostic scanner to read and clear the fault code, and monitor the exhaust valve position sensor readings to identify any anomalies.
  3. Test the exhaust valve position sensor for proper operation and replace it if necessary.
  4. Check the wiring and connections between the exhaust valve and the onboard computer for any loose or damaged wires, repairing or replacing them as needed.
  5. If the issue persists, consider replacing the exhaust valve itself to ensure proper functionality.

Cost to Fix U142C

The cost of repairing the U142C code can vary depending on the specific cause of the issue and the extent of the repairs needed. On average, the parts for this repair could range from $100 to $500, with labor costs adding an additional $100 to $300. Keep in mind that diagnostic time and labor rates can vary between auto repair shops, so it's advisable to get quotes from multiple sources to ensure a fair price. Additionally, factors such as the vehicle make and model, location, and engine type can also impact the overall cost of the repair.

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Code U142C Information for Specific Makes

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 Code

1. What are the common symptoms of OBDII code U142C (Implausible Data Received From Exhaust Valve 2)?

- Common symptoms include engine misfires, rough idling, loss of power, and possibly reduced fuel efficiency.

2. What are some possible causes of OBDII code U142C?

- The code U142C can be triggered by issues such as a faulty exhaust valve position sensor, wiring problems, or a malfunction in the engine control module (ECM).

3. How serious is OBDII code U142C?

- While the severity can vary, it is important to address this code promptly to prevent potential damage to the engine and ensure optimal vehicle performance.

4. How can I diagnose the source of OBDII code U142C?

- Diagnosing this code typically involves using a diagnostic scanner to retrieve the code, checking the exhaust valve position sensor and related wiring, and testing the ECM for any faults.

5. Can I still drive my vehicle with OBDII code U142C?

- It is not recommended to drive the vehicle with this code, as it may lead to further engine damage or performance issues. It's best to address the issue as soon as possible.

6. What are some repair tips for resolving OBDII code U142C?

- Repair tips may include checking and replacing the exhaust valve position sensor, repairing any damaged wiring, and resetting the ECM to clear the code.

7. How much does it typically cost to repair OBDII code U142C?

- The cost of repairs for this code can vary depending on the specific issue and the labor rates in your area. It's advisable to consult with a mechanic for an accurate estimate.

8. Can I reset OBDII code U142C without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause to prevent the code from reoccurring and potentially causing further problems.

9. Is OBDII code U142C a common issue in certain vehicle makes or models?

- This code may be more prevalent in specific vehicle makes or models that are equipped with exhaust valve position sensors and similar components.

10. How can I prevent OBDII code U142C from occurring in the future?

- Regular maintenance, timely sensor replacements, and addressing any engine issues promptly can help prevent the occurrence of OBDII code U142C.

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