Engine-Codes.com
Engine-Codes – Mercury – P142C Mercury

P142C Mercury Code - Exhaust Gas Recirculation Sensor 'D' Range/Performance

Quick Answer

The P142C code for a Mercury vehicle indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'D', specifically related to its range or performance. Common causes include Faulty EGR sensor 'D', Wiring or connector issues in the EGR sensor circuit, Carbon buildup in the EGR 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
P142C Mercury indicates Exhaust Gas Recirculation Sensor 'D' Range/Performance.
Common causes
Common causes include Faulty EGR sensor 'D', Wiring or connector issues in the EGR sensor circuit, Carbon buildup in the EGR 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 10, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P142C Mercury Description

The P142C code for a Mercury vehicle indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'D', specifically related to its range or performance. The EGR system plays a crucial role in reducing harmful emissions by recirculating a portion of the engine's exhaust gases back into the intake manifold. This process helps lower combustion temperatures, reducing the formation of nitrogen oxides (NOx).

OBDII Code P142C Mercury - Exhaust Gas Recirculation Sensor 'D' Range/Performance
P142C Mercury Code - Exhaust Gas Recirculation Sensor 'D' Range/Performance

Common Causes of P142C Mercury

  1. Faulty EGR sensor 'D'
  2. Wiring or connector issues in the EGR sensor circuit
  3. Carbon buildup in the EGR system
  4. Vacuum leaks affecting EGR operation
  5. Engine control module (ECM) software issues

Symptoms of P142C Mercury

  1. Check Engine Light illuminated
  2. Reduced engine performance or power
  3. Rough idling or stalling
  4. Increased fuel consumption
  5. Emissions exceeding legal limits

How to Fix P142C Mercury

  1. Begin by diagnosing the specific cause of the P142C code using a diagnostic scan tool to pinpoint the issue.
  2. Inspect the EGR sensor 'D', wiring, and connectors for any damage or corrosion. Replace any faulty components.
  3. Clean the EGR system to remove any carbon deposits that may be affecting sensor operation.
  4. Check for vacuum leaks in the EGR system and repair or replace any damaged hoses.
  5. Clear the diagnostic trouble codes from the ECM and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P142C Mercury

The cost of repairing the P142C code on a Mercury vehicle can vary depending on the extent of the issue and the specific components that need to be replaced. On average, the repair cost for this issue can range from $200 to $500, including parts and labor. It is essential to consult with a qualified mechanic or auto repair shop to get an accurate estimate based on the vehicle's make and model, as well as the local labor rates. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these factors before proceeding with the repair.

Need more information about the P142C Mercury code?

Need more information on how to fix the P142C Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P142C Mercury code diagnosed by a professional: Find a repair shop in your area

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 P142C Mercury Code

1. What are the common symptoms of OBDII code P142C in a Mercury related to the Exhaust Gas Recirculation Sensor 'D' Range/Performance issue?

- Common symptoms include rough idling, reduced engine performance, and decreased fuel efficiency.

2. What are some possible causes of the P142C OBDII code in a Mercury, specifically related to the Exhaust Gas Recirculation Sensor 'D'?

- Possible causes include a faulty EGR sensor 'D', clogged EGR passages, wiring issues, or a malfunctioning EGR valve.

3. How can I diagnose the P142C code in my Mercury related to the Exhaust Gas Recirculation Sensor 'D' issue?

- Diagnosis involves using an OBDII scanner to read the code, checking the EGR system components for damage or blockages, and testing the EGR sensor's functionality.

4. Can I continue driving my Mercury with the P142C code related to the EGR Sensor 'D' issue?

- It is not recommended to drive with the P142C code as it can lead to further engine damage and decreased performance if left unresolved.

5. What are some repair tips for fixing the P142C code in a Mercury due to the Exhaust Gas Recirculation Sensor 'D' Range/Performance issue?

- Repair tips include cleaning or replacing the EGR sensor 'D', cleaning out any clogged EGR passages, checking and repairing wiring connections, and ensuring the EGR valve is functioning correctly.

6. Will resetting the OBDII code P142C in my Mercury related to the EGR Sensor 'D' issue temporarily fix the problem?

- Resetting the code may temporarily turn off the check engine light, but the underlying issue causing the code will still need to be diagnosed and repaired to prevent further problems.

7. How much does it typically cost to repair the P142C code in a Mercury caused by the Exhaust Gas Recirculation Sensor 'D' Range/Performance issue?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

8. Can a DIY enthusiast with basic automotive knowledge fix the P142C code related to the EGR Sensor 'D' issue in a Mercury?

- Depending on the specific cause, a DIY enthusiast may be able to address some aspects of the repair, such as cleaning or replacing the EGR sensor 'D', but more complex issues may require professional assistance.

9. How urgent is it to address the P142C OBDII code in a Mercury related to the Exhaust Gas Recirculation Sensor 'D' problem?

- It is recommended to address the issue promptly to prevent potential damage to the engine and ensure optimal performance and fuel efficiency of the vehicle.

10. Are there any preventive measures to avoid encountering the P142C code in a Mercury due to the EGR Sensor 'D' Range/Performance issue in the future?

- Regular maintenance, such as cleaning the EGR system components and monitoring engine performance, can help prevent issues leading to the P142C code.

Discuss the causes and fixes for P142C Mercury OBDII Code

Submit a New Comment

Code P142C Mercury comments

No comments found for this page.