AutoCodes – Chevrolet – P14A4 2021 Chevrolet Silverado

P14A4 2021 Chevrolet Silverado 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 2021 Chevrolet Silverado 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.
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Code Popularity 333
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 18, 2023
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Code P14A4 2021 Chevrolet Silverado 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 2021 Chevrolet Silverado - EVAP Purge Pump High Temperature - AutoCodes.com
P14A4 2021 Chevrolet Silverado Code - EVAP Purge Pump High Temperature

What are the Possible Causes of the DTC P14A4 2021 Chevrolet Silverado?

  • 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 2021 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 P14A4 2021 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 P14A4 2021 Chevrolet Silverado code?

Need more information on how to fix the P14A4 2021 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 2021 Chevrolet Silverado Code

1. What are common symptoms of an EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado?

- Common symptoms include check engine light illumination, decreased fuel efficiency, rough idling, or difficulty starting the vehicle.

2. What could cause the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado?

- Possible causes include a faulty EVAP purge pump, damaged wiring or connectors, a clogged EVAP canister, or a malfunctioning EVAP system pressure sensor.

3. How serious is the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado?

- While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the EVAP system and ensure proper emission control.

4. Can driving with the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado cause further damage?

- Continued driving with this code may lead to decreased fuel efficiency, increased emissions, and potential long-term damage to the EVAP system components.

5. How can I diagnose and repair the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado?

- Diagnosis typically involves checking the EVAP system components, testing the purge pump operation, inspecting wiring for damage, and verifying the system pressure sensor's functionality. Repair may involve replacing the purge pump, clearing the code, and testing the system.

6. Can I reset the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado by disconnecting the battery?

- While disconnecting the battery may clear the code temporarily, it is essential to address the underlying issue causing the code to prevent its recurrence.

7. How much does it cost to fix the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado?

- The cost of fixing this code can vary depending on the specific cause, parts needed for repair, labor rates, and whether you choose to address the issue yourself or take it to a professional mechanic.

8. Is the EVAP Purge Pump High Temperature (P14A4) code covered under warranty for a 2021 Chevrolet Silverado?

- Depending on the warranty coverage provided by Chevrolet, the EVAP system components and related issues, including the purge pump high temperature code, may be covered under certain warranties. It is recommended to check with your dealership for more information.

9. What steps can I take to prevent the EVAP Purge Pump High Temperature (P14A4) code from occurring again on my 2021 Chevrolet Silverado?

- Regular maintenance of the EVAP system, including checking for leaks, ensuring proper gas cap sealing, and addressing any warning lights promptly, can help prevent the recurrence of this code.

10. Will the EVAP Purge Pump High Temperature (P14A4) code on a 2021 Chevrolet Silverado cause the vehicle to fail emissions testing?

- Yes, if the EVAP system is not functioning properly, it may cause the vehicle to fail emissions testing. It is important to address this code before undergoing emissions testing to ensure compliance.

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