AutoCodes – GMC – P14A4 GMC

P14A4 GMC 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 GMC 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 284
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 GMC 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 GMC - EVAP Purge Pump High Temperature - AutoCodes.com
P14A4 GMC Code - EVAP Purge Pump High Temperature

What are the Possible Causes of the DTC P14A4 GMC?

  • 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 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 P14A4 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 P14A4 GMC code?

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

Need Help with the Code?

Get the P14A4 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 GMC Code

1. What are the common symptoms of OBDII code P14A4 GMC related to the EVAP purge pump high temperature?

The common symptoms include a check engine light illuminated on the dashboard, decreased fuel efficiency, and potential rough idling.

2. What are the possible causes of OBDII code P14A4 GMC indicating an issue with the EVAP purge pump high temperature?

Possible causes include a faulty purge pump, a clogged EVAP system, a malfunctioning EVAP pressure sensor, or a problem with the vehicle's onboard computer.

3. How can I diagnose the OBDII code P14A4 GMC related to the EVAP purge pump high temperature?

Diagnosis typically involves using an OBDII scanner to retrieve the specific trouble code, checking the purge pump and associated components for any visible damage, and testing the functionality of the EVAP system.

4. What are some repair tips for addressing OBDII code P14A4 GMC indicating a problem with the EVAP purge pump high temperature?

Repair tips may include replacing the faulty purge pump, clearing any obstructions in the EVAP system, checking and potentially replacing the EVAP pressure sensor, and resetting the trouble code with an OBDII scanner after repairs are completed.

5. Can ignoring OBDII code P14A4 GMC related to the EVAP purge pump high temperature cause further damage to my vehicle?

Ignoring this code can lead to increased emissions, potential damage to other emission control components, and may eventually result in the vehicle failing an emissions test.

6. How much does it typically cost to repair OBDII code P14A4 GMC associated with the EVAP purge pump high temperature?

The cost of repairing this code can vary depending on the specific cause of the issue, but it may range from $100 to $500, including parts and labor.

7. Is it safe to continue driving my vehicle with OBDII code P14A4 GMC triggered by an EVAP purge pump high temperature issue?

While the vehicle may still be operable, it is recommended to address the issue promptly to prevent potential damage to other components and ensure optimal fuel efficiency.

8. Can a DIY enthusiast with basic automotive knowledge repair OBDII code P14A4 GMC related to the EVAP purge pump high temperature?

Depending on the specific cause of the issue, some repairs may be straightforward for individuals with basic automotive knowledge, such as replacing the purge pump. However, more complex diagnostics and repairs may require professional assistance.

9. What steps can I take to prevent OBDII code P14A4 GMC from recurring in the future after repairing the EVAP purge pump high temperature issue?

Regularly inspecting and maintaining the EVAP system, ensuring proper fuel cap closure, avoiding overfilling the fuel tank, and promptly addressing any check engine light warnings can help prevent this issue from recurring.

10. How long does it typically take to repair OBDII code P14A4 GMC associated with the EVAP purge pump high temperature?

The repair time can vary depending on the specific cause of the issue and the complexity of the repairs needed. In general, it may take anywhere from 1 to 3 hours to diagnose and address the problem.

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