P042E 2014 GMC Sierra 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 2014 GMC Sierra 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.
Code P042E 2014 GMC Sierra Description
What are the Possible Causes of the DTC P042E 2014 GMC Sierra?
- 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 2014 GMC Sierra?
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 2014 GMC Sierra 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 2014 GMC Sierra code?
Need more information on how to fix the P042E 2014 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P042E 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P042E 2014 GMC Sierra Code
1. What does code P042E mean on a 2014 GMC Sierra?
Code P042E indicates an issue with the Exhaust Gas Recirculation (EGR) system, specifically that the EGR valve is not operating correctly in the closed position.
2. What are the common symptoms of P042E in a 2014 GMC Sierra?
Symptoms may include rough idling, reduced engine performance, increased fuel consumption, the Check Engine Light turning on, and possible engine hesitation or stalling.
3. What causes the P042E code to appear on a 2014 GMC Sierra?
Common causes include a malfunctioning EGR valve, carbon buildup in the EGR system, wiring or connector issues, or a faulty EGR position sensor.
4. Can I drive my 2014 GMC Sierra with a P042E code?
While the vehicle may still be drivable, ignoring the code can lead to reduced performance, higher emissions, and potential engine damage over time if the issue is not addressed.
5. How do I diagnose the P042E code on a 2014 GMC Sierra?
Start by using an OBDII scanner to confirm the code, inspect the EGR valve for clogging or damage, check the wiring and connectors for continuity, and test the EGR position sensor for proper operation.
6. How can I fix P042E on my 2014 GMC Sierra?
Repairs may involve cleaning or replacing the EGR valve, clearing blockages in the EGR passages, repairing damaged wiring, or replacing the EGR position sensor if it’s faulty.
7. How much does it cost to repair a P042E code on a 2014 GMC Sierra?
Repair costs vary, but cleaning the EGR valve typically costs $100–$200, while replacing the valve or sensor can range from $200 to $600 depending on parts and labor.
8. Can a clogged EGR valve cause a P042E code?
Yes, carbon buildup and clogging in the EGR valve can prevent it from closing properly, triggering the P042E code.
9. What tools are needed to fix a P042E code on a 2014 GMC Sierra?
You’ll need basic hand tools, an OBDII scanner, a multimeter for electrical tests, and possibly an EGR cleaning kit if cleaning is required.
10. Does the P042E code affect emissions on a 2014 GMC Sierra?
Yes, a malfunctioning EGR system can result in increased nitrogen oxide (NOx) emissions, which may cause the vehicle to fail an emissions test.
Discuss the causes and fixes for P042E 2014 GMC Sierra OBDII Code
Code P042E 2014 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
