AutoCodes – Chevrolet – P042E Chevrolet

P042E Chevrolet Code - Exhaust Gas Recirculation Closed Position Performance

Quick Answer

The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) position sensor to determine the position of the EGR valve. Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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: P042E Chevrolet indicates Exhaust Gas Recirculation Closed Position Performance.
Common causes: Common causes include Faulty Exhaust Gas Recirculation (EGR) Valve, Exhaust Gas Recirculation Valve harness is open or shorted, Exhaust Gas Recirculation Valve 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 2,982

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 24, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P042E Chevrolet Description

The Engine Control Module (ECM) uses the Exhaust Gas Recirculation (EGR) position sensor to determine the position of the EGR valve. The ECM sends a reference voltage through the 5 V reference circuit to the EGR position sensor. The ECM provides a voltage return path for the sensor through the low reference circuit. A signal based on the EGR valve position is sent from the EGR sensor to the ECM. The Diagnostic Trouble Code (DTC) will be set when the ECM detects that the desired position and the actual position of the EGR valve is greater than a calibrated threshold.

OBDII Code P042E Chevrolet - Exhaust Gas Recirculation Closed Position Performance - AutoCodes.com — P042E Chevrolet Code - Exhaust Gas Recirculation Closed Position Performance

What does this mean?

What are the Possible Causes of the DTC P042E Chevrolet?

Faulty Exhaust Gas Recirculation (EGR) Valve
Exhaust Gas Recirculation Valve harness is open or shorted
Exhaust Gas Recirculation Valve circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P042E Chevrolet?

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 P042E Chevrolet 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.

Need more information about the P042E Chevrolet code?

Need more information on how to fix the P042E Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P042E Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

P042E 2014 Chevrolet Silverado — Exhaust Gas Recirculation Closed Position Performance
P042E 2015 Chevrolet Silverado — Exhaust Gas Recirculation Closed Position Performance
P042E 2016 Chevrolet Silverado — Exhaust Gas Recirculation Closed Position Performance
P042E 2017 Chevrolet Silverado — Exhaust Gas Recirculation Closed Position Performance
P042E 2018 Chevrolet Silverado — Exhaust Gas Recirculation Closed Position Performance

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 P042E Chevrolet Code

1. What are the common symptoms of OBDII code P042E in a Chevrolet related to Exhaust Gas Recirculation Closed Position Performance?

- Common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and the illumination of the Check Engine Light.

2. What are the typical causes of OBDII code P042E in a Chevrolet?

- The code P042E in a Chevrolet is often caused by a faulty Exhaust Gas Recirculation (EGR) valve, a clogged EGR passage, or issues with the EGR position sensor.

3. How can I diagnose the OBDII code P042E in my Chevrolet?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, inspecting the EGR system components for any visible damage or clogs, and testing the EGR valve and sensor for proper function.

4. Can a dirty or clogged EGR valve trigger the OBDII code P042E in a Chevrolet?

- Yes, a dirty or clogged EGR valve can disrupt the proper functioning of the EGR system and lead to the triggering of code P042E in a Chevrolet.

5. What repair tips can help resolve the OBDII code P042E in a Chevrolet?

- Repair tips include cleaning or replacing the EGR valve, clearing any clogs in the EGR passage, ensuring proper electrical connections, and retesting the system after repairs.

6. Is it safe to continue driving my Chevrolet with the OBDII code P042E present?

- It is generally not recommended to continue driving with the P042E code active, as it can lead to further engine performance issues and potential damage if left unresolved.

7. How much does it typically cost to repair the OBDII code P042E in a Chevrolet?

- The cost of repairs for the P042E code can vary depending on the extent of the issue and whether parts need to be replaced, but it generally ranges from $100 to $500.

8. Can I reset the Check Engine Light after resolving the OBDII code P042E in my Chevrolet?

- Yes, once the underlying issue causing the P042E code is fixed, the Check Engine Light can be reset using an OBDII scanner to clear the code.

9. Are there any preventive maintenance measures to avoid triggering the OBDII code P042E in a Chevrolet?

- Regularly inspecting and cleaning the EGR system components, following the manufacturer's recommended maintenance schedule, and using high-quality fuel can help prevent issues leading to code P042E.