AutoCodes – Chevrolet – P042E 2017 Chevrolet Silverado

P042E 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado 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 195

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 Jun 19, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P042E 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado - Exhaust Gas Recirculation Closed Position Performance - AutoCodes.com — P042E 2017 Chevrolet Silverado Code - Exhaust Gas Recirculation Closed Position Performance

What does this mean?

What are the Possible Causes of the DTC P042E 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado?

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 2017 Chevrolet Silverado 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 2017 Chevrolet Silverado code?

Need more information on how to fix the P042E 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P042E 2017 Chevrolet Silverado 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 P042E 2017 Chevrolet Silverado Code

1. What does the OBDII code P042E mean for a 2017 Chevrolet Silverado?

P042E indicates an issue with the Exhaust Gas Recirculation (EGR) system, specifically that the EGR valve is not performing as expected in the closed position.

2. What are the common symptoms of code P042E in a 2017 Chevrolet Silverado?

Symptoms include reduced engine performance, rough idling, decreased fuel efficiency, and the check engine light turning on.

3. What causes the P042E code to appear in a 2017 Chevrolet Silverado?

Common causes include carbon buildup in the EGR valve, a malfunctioning EGR valve, wiring or connector issues, or a faulty EGR position sensor.

4. Can I drive my 2017 Chevrolet Silverado with a P042E code?

While the vehicle may remain drivable, prolonged operation with this code can lead to further engine issues or damage, so itâ€™s best to address the problem promptly.

5. How do I diagnose the P042E code on my 2017 Chevrolet Silverado?

Diagnosis typically involves using a scan tool to confirm the code, inspecting the EGR valve and its wiring, and checking for carbon buildup or mechanical failure.

6. How do I fix the P042E code on a 2017 Chevrolet Silverado?

Fixes may include cleaning or replacing the EGR valve, repairing wiring or connector issues, or replacing the EGR position sensor if itâ€™s faulty.

7. How much does it cost to repair a P042E code on a 2017 Chevrolet Silverado?

Repair costs vary but typically range from $150 to $400, depending on whether the EGR valve needs cleaning or replacement.

8. What happens if I ignore the P042E code on my 2017 Chevrolet Silverado?

Ignoring the code can lead to engine inefficiency, increased emissions, and potential damage to other components like the catalytic converter.

9. Can a dirty air filter cause the P042E code on a 2017 Chevrolet Silverado?

While unlikely, a severely clogged air filter can indirectly affect EGR system performance by disrupting airflow and engine operation.

10. Do I need special tools to repair the P042E code on a 2017 Chevrolet Silverado?

Basic tools may suffice, but proper diagnosis and repair often require an OBDII scan tool and possibly specialized equipment for cleaning the EGR valve.