AutoCodes – GMC – P1468 2022 GMC Sierra

P1468 2022 GMC Sierra Code - EVAP Purge Pump Overspeed

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: P1468 2022 GMC Sierra indicates EVAP Purge Pump Overspeed.
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 282

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 P1468 2022 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, and the Diagnostic Trouble Code (DTC) will be set when the EVAP Purge Pump Speed is greater than 240 RPM when commanded off for greater than 5 s.

OBDII Code P1468 2022 GMC Sierra - EVAP Purge Pump Overspeed - AutoCodes.com — P1468 2022 GMC Sierra Code - EVAP Purge Pump Overspeed

What does this mean?

What are the Possible Causes of the DTC P1468 2022 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 P1468 2022 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 P1468 2022 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 P1468 2022 GMC Sierra code?

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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 P1468 2022 GMC Sierra Code

1. What does OBDII code P1468 in a 2022 GMC Sierra mean?

The P1468 code indicates an issue with the EVAP purge pump overspeed in the vehicle's emission control system.

2. What are the common symptoms of a P1468 OBDII code in a GMC Sierra?

Common symptoms include illuminated Check Engine Light, rough idling, decreased fuel efficiency, and potential difficulty starting the vehicle.

3. What are the possible causes of a P1468 OBDII code in a 2022 GMC Sierra?

Potential causes include a faulty EVAP purge pump, damaged wiring or connectors in the EVAP system, a vacuum leak, or a malfunctioning EVAP pressure sensor.

4. How serious is a P1468 OBDII code in a GMC Sierra?

While the vehicle may still be operable with this code, it is important to address it promptly to prevent potential damage to the emission control system and ensure the vehicle's optimal performance.

5. Can I continue driving my GMC Sierra with a P1468 OBDII code?

It is generally recommended to avoid driving the vehicle extensively with this code present, as it can lead to increased emissions and potential long-term damage to the vehicle's components.

6. How can I diagnose and repair a P1468 OBDII code in my 2022 GMC Sierra?

Diagnosis typically involves inspecting the EVAP system components, checking for leaks, testing the purge pump operation, and verifying the integrity of wiring and connectors. Repair may involve replacing the purge pump, fixing wiring issues, or addressing vacuum leaks.

7. Can a DIY enthusiast fix a P1468 OBDII code in a GMC Sierra?

While some basic diagnostics like checking for loose connections or damaged wires can be done by DIY enthusiasts, addressing the root cause of the P1468 code may require specialized tools and expertise, making professional assistance advisable.

8. How much does it cost to fix a P1468 OBDII code in a 2022 GMC Sierra?

The cost of repairs for a P1468 code can vary depending on the specific cause of the issue, labor rates, and the need for replacement parts. It is recommended to obtain quotes from reputable mechanics or dealerships.

9. Are there any preventive maintenance measures to avoid a P1468 OBDII code in a GMC Sierra?

Regularly inspecting and maintaining the EVAP system, ensuring the gas cap is properly sealed, and promptly addressing any check engine lights or unusual vehicle behavior can help prevent the occurrence of a P1468 code.

10. Will resetting the OBDII system clear a P1468 code in a 2022 GMC Sierra?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the P1468 code is not addressed, the code is likely to reappear. It is essential to diagnose and fix the root cause of the problem.