AutoCodes – Chevrolet – P14A4 Chevrolet

P14A4 Chevrolet 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 Chevrolet 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 534

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P14A4 Chevrolet 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 Chevrolet - EVAP Purge Pump High Temperature - AutoCodes.com — P14A4 Chevrolet Code - EVAP Purge Pump High Temperature

What does this mean?

What are the Possible Causes of the DTC P14A4 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet code?

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

Need Help with the Code?

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

Information for Specific Chevrolet Models

P14A4 2019 Chevrolet Silverado — EVAP Purge Pump High Temperature
P14A4 2020 Chevrolet Silverado — EVAP Purge Pump High Temperature
P14A4 2021 Chevrolet Silverado — EVAP Purge Pump High Temperature
P14A4 2022 Chevrolet Silverado — EVAP Purge Pump High Temperature

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 Chevrolet Code

1. What does the OBDII code P14A4 mean on a Chevrolet?

P14A4 indicates that the EVAP (Evaporative Emission Control System) purge pump has recorded a high temperature, which may suggest a malfunction or overuse.

2. What are the common symptoms of the P14A4 code?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, difficulty starting the engine, or a noticeable fuel odor.

3. What causes the EVAP purge pump to overheat and trigger code P14A4?

Common causes include a faulty purge pump, clogged EVAP lines, electrical issues like a short circuit, or prolonged pump operation due to system leaks.

4. Can I still drive my Chevrolet with the P14A4 code?

While the car may still be driveable, itâ€™s not recommended to ignore the issue, as it could lead to further damage to the EVAP system or affect emissions compliance.

5. How can I diagnose the P14A4 code?

Diagnosis typically involves inspecting the EVAP purge pump, checking for blockages or leaks in the EVAP system, and testing the electrical connections and wiring for continuity or damage.

6. What repairs are needed to fix the P14A4 code?

Repairs may include replacing the EVAP purge pump, repairing or replacing damaged wiring, clearing blockages in the EVAP system, or sealing leaks if present.

7. How much does it cost to fix the P14A4 code?

Repair costs can range from $150 to $500 depending on whether the purge pump needs replacement or if additional repairs are required for wiring or EVAP system leaks.

8. Can a faulty gas cap cause the P14A4 code?

While a loose or damaged gas cap can cause EVAP-related codes, it is unlikely to directly cause the P14A4 code. However, itâ€™s still worth checking as part of the diagnosis.

9. Will clearing the P14A4 code with a scanner fix the issue?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be addressed to prevent the code from returning.

10. How can I prevent the P14A4 code from occurring again?

Regularly inspect the EVAP system for leaks, ensure proper maintenance of components, and address any check engine light issues promptly to avoid overworking the purge pump.