AutoCodes – GMC – P14A4 2020 GMC Sierra

P14A4 2020 GMC Sierra Code - EVAP Purge Pump High Temperature

Quick Answer

Purge capacity is being reduced by technologies that improve fuel economy. Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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
P14A4 2020 GMC Sierra indicates EVAP Purge Pump High Temperature.
Common causes
Common causes include Faulty Evaporative Emission Purge Pump, Evaporative Emission Purge Pump harness is open or shorted, Evaporative Emission Purge Pump 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 293
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 18, 2023
πŸ’¬ Need more help? Ask Coddy for instant answers β€” it's free!

Code P14A4 2020 GMC Sierra Description

Purge capacity is being reduced by technologies that improve fuel economy. The Evaporative Emission Purge Pump is used to purge stored vapors from the Evaporative Emission Canister and is required to increase the purge volumes to meet LEV 3 Evaporative Emission requirements. The Evaporative Emission Purge Pump has an integral pressure sensor for controlling purge vapors from the canister. The Engine Control Module (ECM) monitors the Evaporative Emission Purge Pump, the Diagnostic Trouble Code (DTC) will be set when the EVAP Purge Pump Temperature is greater than a predefined threshold for greater than 8 s.
OBDII Code P14A4 2020 GMC Sierra - EVAP Purge Pump High Temperature - AutoCodes.com
P14A4 2020 GMC Sierra Code - EVAP Purge Pump High Temperature

What are the Possible Causes of the DTC P14A4 2020 GMC Sierra?

  • Faulty Evaporative Emission Purge Pump
  • Evaporative Emission Purge Pump harness is open or shorted
  • Evaporative Emission Purge Pump circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P14A4 2020 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 P14A4 2020 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 P14A4 2020 GMC Sierra code?

Need more information on how to fix the P14A4 2020 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P14A4 2020 GMC Sierra 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 P14A4 2020 GMC Sierra Code

1. What are common symptoms of an EVAP Purge Pump High Temperature (P14A4) OBDII code in a 2020 GMC Sierra?

The common symptoms include the check engine light coming on, decreased fuel efficiency, and potential issues with the vehicle's emissions system.

2. What are the possible causes of the P14A4 OBDII code in a 2020 GMC Sierra?

Potential causes of the EVAP Purge Pump High Temperature code may include a faulty purge valve, malfunctioning EVAP system components, or wiring/connectivity issues.

3. How can I diagnose the EVAP Purge Pump High Temperature code in my 2020 GMC Sierra?

Diagnosing the issue may involve using an OBDII scanner to retrieve the specific trouble code, checking the EVAP system components for any visible damage, and testing the purge valve and related components for proper operation.

4. Can driving with a P14A4 OBDII code in a 2020 GMC Sierra cause further damage?

Continuing to drive with the EVAP Purge Pump High Temperature code may lead to decreased fuel efficiency, potential damage to the vehicle's catalytic converter, and increased emissions output.

5. How can I repair the EVAP Purge Pump High Temperature code in my 2020 GMC Sierra?

Repairing the issue may involve replacing the faulty purge valve, repairing any damaged wiring or connectors, and clearing the trouble code using an OBDII scanner.

6. Is it safe to continue driving my 2020 GMC Sierra with the P14A4 OBDII code?

While the vehicle may still be operable with the code present, it is recommended to address the issue promptly to prevent potential long-term damage to the vehicle's emissions system.

7. Are there any DIY repair tips for fixing the EVAP Purge Pump High Temperature code in a 2020 GMC Sierra?

DIY enthusiasts can attempt to replace the purge valve themselves after ensuring they have the necessary tools and expertise. However, professional diagnosis and repair are recommended for complex issues.

8. How much does it typically cost to repair the EVAP Purge Pump High Temperature code in a 2020 GMC Sierra?

The cost of repairing the issue can vary depending on the specific cause, parts needed, and labor costs. It is advisable to obtain quotes from reputable auto repair shops for an accurate estimate.

9. Can a faulty gas cap trigger the P14A4 OBDII code in a 2020 GMC Sierra?

While a faulty gas cap is more commonly associated with EVAP system leak codes, it is still worth checking and ensuring the gas cap is properly sealed to rule it out as a potential cause of the high-temperature code.

10. Will resetting the OBDII code clear the issue permanently in a 2020 GMC Sierra?

Resetting the code may temporarily clear the check engine light, but if the underlying issue causing the P14A4 code is not addressed, the code is likely to reappear. It's important to diagnose and repair the problem to prevent future occurrences.

Discuss the causes and fixes for P14A4 2020 GMC Sierra OBDII Code

Code P14A4 2020 GMC Sierra comments

No comments found for this page.

AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play