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P142D Ford Code - Exhaust Gas Recirculation Sensor 'D' Circuit Low

Quick Answer

The P142D Ford code indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'D' circuit being too low. Common causes include Faulty EGR Sensor: The EGR sensor 'D' itself may be malfunctioning and providing incorrect readings to the ECM, Wiring Issues: Damaged or corroded wiring connecting the EGR sensor to the ECM can cause a low circuit reading, ECM Malfunction: A problem with the engine control module can prevent proper communication with the EGR sensor. 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
P142D Ford indicates Exhaust Gas Recirculation Sensor 'D' Circuit Low.
Common causes
Common causes include Faulty EGR Sensor: The EGR sensor 'D' itself may be malfunctioning and providing incorrect readings to the ECM, Wiring Issues: Damaged or corroded wiring connecting the EGR sensor to the ECM can cause a low circuit reading, ECM Malfunction: A problem with the engine control module can prevent proper communication with the EGR sensor.
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
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Code P142D Ford Description

The P142D Ford code indicates a problem with the Exhaust Gas Recirculation (EGR) sensor 'D' circuit being too low. The EGR system is responsible for recirculating a portion of the exhaust gases back into the engine cylinders to reduce emissions and improve fuel efficiency. The EGR sensor 'D' is a crucial component that monitors the exhaust gas flow and provides feedback to the engine control module (ECM) to ensure the proper operation of the EGR system.

OBDII Code P142D Ford - Exhaust Gas Recirculation Sensor 'D' Circuit Low
P142D Ford Code - Exhaust Gas Recirculation Sensor 'D' Circuit Low

Common Causes of P142D Ford

  1. Faulty EGR Sensor: The EGR sensor 'D' itself may be malfunctioning and providing incorrect readings to the ECM.
  2. Wiring Issues: Damaged or corroded wiring connecting the EGR sensor to the ECM can cause a low circuit reading.
  3. ECM Malfunction: A problem with the engine control module can prevent proper communication with the EGR sensor.
  4. Vacuum Leak: A leak in the vacuum lines connected to the EGR system can disrupt the flow of exhaust gases.
  5. Carbon Buildup: Excessive carbon deposits in the EGR system can affect sensor readings and overall system performance.

Symptoms of P142D Ford

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the Check Engine Light on the dashboard.
  2. Rough Idle: The engine may experience rough idling or hesitation during acceleration due to improper EGR operation.
  3. Decreased Fuel Efficiency: A malfunctioning EGR sensor can lead to decreased fuel efficiency as the engine may not be operating at optimal conditions.
  4. Increased Emissions: The vehicle may produce higher emissions than normal, which can result in failing emissions tests.

How to Fix P142D Ford

  1. Diagnostic Testing: The first step is to perform diagnostic tests to pinpoint the exact cause of the low circuit reading, which may involve using a multimeter and checking wiring connections.
  2. Replace EGR Sensor: If the sensor is found to be faulty, it will need to be replaced with a new one to ensure accurate readings.
  3. Repair Wiring: Any damaged or corroded wiring should be repaired or replaced to restore proper connectivity between the EGR sensor and ECM.
  4. Check ECM: The engine control module should be checked for any software updates or malfunctions that could be affecting the EGR system.
  5. Clear Codes: Once the repairs are completed, the diagnostic trouble codes should be cleared from the ECM to reset the Check Engine Light.

Cost to Fix P142D Ford

The cost of repairing a P142D Ford code related to the EGR sensor 'D' circuit low can vary depending on the exact cause of the issue. In general, the cost of replacing the EGR sensor itself ranges from $150 to $300, while repairing wiring or addressing ECM issues can add to the total cost. Labor costs typically range from $80 to $150 per hour, and the total repair bill can range from $200 to $500 or more. It's important to note that prices can vary based on location, vehicle make and model, and the specific repair shop. It's recommended to obtain quotes from multiple sources to get a more accurate estimate for this repair.

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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 P142D Ford Code

1. What are the common symptoms of OBDII code P142D (Ford)?

The common symptoms of code P142D include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P142D (Ford) indicate?

This code indicates a low circuit voltage in the Exhaust Gas Recirculation (EGR) sensor 'D', which measures the flow of exhaust gases back into the engine.

3. What are the possible causes of OBDII code P142D (Ford)?

Possible causes of this code include a faulty EGR sensor 'D', damaged wiring or connectors in the circuit, a clogged EGR valve, or a malfunctioning EGR control module.

4. How can I diagnose the OBDII code P142D (Ford)?

Diagnosing this code involves using a scan tool to retrieve the code, inspecting the EGR sensor 'D' circuit for any visible damage, testing the sensor's voltage, and checking the EGR valve for blockages.

5. Can I drive my vehicle with the OBDII code P142D (Ford) present?

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

6. How can I repair OBDII code P142D (Ford) myself?

If you have the necessary tools and knowledge, you can attempt to replace the EGR sensor 'D', repair the wiring or connectors, clean or replace the EGR valve, or reset the EGR control module.

7. Is it necessary to clear the OBDII code P142D (Ford) after making repairs?

Yes, it is important to clear the code after making any repairs to reset the Check Engine Light and ensure that the issue has been resolved.

8. How much does it cost to fix OBDII code P142D (Ford) at a repair shop?

The cost of fixing this code at a repair shop can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

9. Can a faulty EGR sensor 'D' cause other problems in the vehicle?

Yes, a faulty EGR sensor 'D' can cause other issues such as reduced engine performance, increased emissions, and potential damage to other components in the engine.

10. How often does OBDII code P142D (Ford) occur in vehicles?

While the frequency of this specific code may vary, issues related to the EGR system are relatively common in vehicles and can occur due to normal wear and tear or other factors.

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