P042E GMC 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 GMC 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 GMC Description
What are the Possible Causes of the DTC P042E GMC?
- 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 GMC?
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 GMC 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 GMC code?
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Get the P042E GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P042E 2014 GMC Sierra — Exhaust Gas Recirculation Closed Position Performance
- P042E 2015 GMC Sierra — Exhaust Gas Recirculation Closed Position Performance
- P042E 2016 GMC Sierra — Exhaust Gas Recirculation Closed Position Performance
- P042E 2017 GMC Sierra — Exhaust Gas Recirculation Closed Position Performance
- P042E 2018 GMC Sierra — Exhaust Gas Recirculation Closed Position Performance
Frequently Asked Questions about P042E GMC Code
1. What are the common symptoms of OBDII code P042E GMC?
- Common symptoms include engine performance issues, rough idle, decreased fuel efficiency, and the illumination of the Check Engine light.
2. What are the possible causes of OBDII code P042E GMC?
- Possible causes may include a faulty exhaust gas recirculation (EGR) valve, a clogged EGR passage, wiring issues, or a malfunctioning EGR position sensor.
3. How can I diagnose OBDII code P042E GMC?
- Diagnosis typically involves using an OBDII scanner to retrieve the trouble code, inspecting the EGR system for any visible damage or blockages, and testing the EGR valve and sensor for proper functioning.
4. Can I continue driving with OBDII code P042E GMC?
- It is not recommended to continue driving with this code as it can lead to further damage to the engine and emissions system. It's best to address the issue promptly.
5. What are some repair tips for fixing OBDII code P042E GMC?
- Repair tips may include cleaning or replacing the EGR valve, clearing any obstructions in the EGR passages, checking and repairing any damaged wiring, and ensuring proper EGR system operation.
6. How much does it typically cost to repair OBDII code P042E GMC?
- The cost of repairs can vary depending on the extent of the issue, the parts needed, and labor costs. It's advisable to consult a mechanic for a more accurate estimate.
7. Can I reset the Check Engine light after fixing OBDII code P042E GMC?
- Yes, the Check Engine light can be reset using an OBDII scanner after the underlying issue triggering the code has been successfully repaired.
8. Is OBDII code P042E GMC a serious problem?
- While not an immediate emergency, ignoring this code can lead to poor engine performance, decreased fuel efficiency, and potential damage to the emissions system over time.
9. How long does it typically take to repair OBDII code P042E GMC?
- The repair time can vary depending on the specific issue causing the code and the complexity of the repair. Some fixes may be completed within a few hours, while others may take longer.
10. Can a DIY enthusiast fix OBDII code P042E GMC at home?
- Depending on the individual's mechanical skill level and access to tools, some DIY enthusiasts may be able to address this code at home. However, it's recommended to consult a professional if uncertain.
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