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Engine-Codes – Generic – P2142

P2142 Code - Exhaust Gas Recirculation Throttle Control Circuit 'A' High

Quick Answer

The P2142 diagnostic trouble code (DTC) indicates an issue with the Exhaust Gas Recirculation (EGR) Throttle Control Circuit 'A' being too high. Common causes include Faulty EGR valve, Malfunctioning EGR throttle control solenoid, Damaged wiring or connectors in the circuit. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P2142 indicates Exhaust Gas Recirculation Throttle Control Circuit 'A' High.
Common causes
Common causes include Faulty EGR valve, Malfunctioning EGR throttle control solenoid, Damaged wiring or connectors in the circuit.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
What is this?
Table of contents Created and updated by William Orellana on Sep 08, 2024
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Code P2142 Description

The P2142 diagnostic trouble code (DTC) indicates an issue with the Exhaust Gas Recirculation (EGR) Throttle Control Circuit 'A' being too high. The EGR system is responsible for recirculating a portion of the exhaust gases back into the engine cylinders to reduce harmful emissions. The throttle control circuit 'A' refers to the electronic component that controls the opening and closing of the EGR valve.

OBDII Code P2142 - Exhaust Gas Recirculation Throttle Control Circuit 'A' High
P2142 Code - Exhaust Gas Recirculation Throttle Control Circuit 'A' High

Common Causes of P2142

  1. Faulty EGR valve
  2. Malfunctioning EGR throttle control solenoid
  3. Damaged wiring or connectors in the circuit
  4. Issues with the engine control module (ECM)
  5. Carbon buildup in the EGR system

Symptoms of P2142

  1. Decreased fuel economy
  2. Rough idling or engine vibrations
  3. Engine performance issues such as hesitation or lack of power
  4. Stalling or difficulty starting the engine
  5. Check Engine Light illuminated on the dashboard

How to Fix P2142

  1. Use an OBD-II scanner to confirm the P2142 code and diagnose the specific issue within the EGR throttle control circuit.
  2. Inspect the EGR valve, throttle control solenoid, and associated wiring for any visible damage or wear.
  3. Test the EGR valve and throttle control solenoid for proper operation using a multimeter.
  4. Replace any faulty components such as the EGR valve, throttle control solenoid, or damaged wiring.
  5. Clear the DTC codes, reset the ECM, and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P2142

The cost estimate for repairing a P2142 code can vary depending on the specific cause of the issue and the vehicle's make and model. On average, the parts for this repair can range from $100 to $300, while labor costs can range from $150 to $400. Overall, the total repair cost for addressing a P2142 code could be between $250 and $700. It's important to note that these are rough estimates, and actual costs may vary based on the factors mentioned earlier.

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Code P2142 Information for Specific Makes

  • P2142 Dodge — Exhaust Gas Recirculation Throttle Control Circuit 'A' High
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 P2142 Code

What does the OBDII code P2142 mean?

P2142 indicates a high voltage issue in the Exhaust Gas Recirculation (EGR) Throttle Control Circuit 'A,' typically related to the EGR throttle valve or its wiring.

What are the common symptoms of code P2142?

Symptoms include rough idling, reduced engine performance, poor fuel efficiency, and the check engine light being illuminated.

What causes code P2142?

Common causes include a faulty EGR throttle valve, damaged or corroded wiring, a malfunctioning control module, or an electrical short in the circuit.

How is code P2142 diagnosed?

Technicians typically inspect the EGR throttle valve, check the wiring and connectors for damage, and use a multimeter to test voltage and continuity in the circuit.

Can I drive with code P2142?

Driving with this code can lead to reduced engine performance and potential damage to the emissions system. It’s best to address the issue promptly.

How do you fix code P2142?

Repairs may include replacing the EGR throttle valve, repairing or replacing damaged wiring, cleaning electrical connections, or reprogramming the control module.

Does code P2142 affect emissions?

Yes, P2142 can impact the EGR system, leading to increased emissions and potentially causing the vehicle to fail an emissions test.

What tools are needed to diagnose P2142?

You’ll need an OBDII scanner, a multimeter for testing electrical circuits, and possibly wiring diagrams for the EGR system.

How much does it cost to fix code P2142?

Repair costs vary depending on the cause but may range between $200 and $600 for parts and labor, with higher costs if the control module requires replacement.

Can a dirty EGR valve cause code P2142?

While a dirty EGR valve can cause performance issues, code P2142 is more commonly caused by electrical or circuit-related problems rather than dirt buildup.

Discuss the causes and fixes for P2142 OBDII Code

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