AutoCodes – Chevrolet – P1468 2020 Chevrolet Silverado

P1468 2020 Chevrolet Silverado 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 2020 Chevrolet Silverado 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 419
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 P1468 2020 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, 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 2020 Chevrolet Silverado - EVAP Purge Pump Overspeed - AutoCodes.com
P1468 2020 Chevrolet Silverado Code - EVAP Purge Pump Overspeed

What are the Possible Causes of the DTC P1468 2020 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 P1468 2020 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 P1468 2020 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 P1468 2020 Chevrolet Silverado code?

Need more information on how to fix the P1468 2020 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 P1468 2020 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P1468 (EVAP Purge Pump Overspeed) in a 2020 Chevrolet Silverado?

The common symptoms of P1468 may include the Check Engine light illuminating, rough idling, decreased fuel efficiency, and potential odor of fuel vapors.

2. What are the possible causes of OBDII code P1468 in a 2020 Chevrolet Silverado?

Potential causes of P1468 include a faulty EVAP purge solenoid, a malfunctioning purge pump, damaged vacuum hoses, or issues with the EVAP system's electrical connections.

3. How serious is OBDII code P1468 in a 2020 Chevrolet Silverado?

While the vehicle may still be operable with P1468, it is important to address the issue promptly to prevent potential damage to the EVAP system and ensure optimal vehicle performance.

4. Can I continue driving my 2020 Chevrolet Silverado with OBDII code P1468?

It is generally safe to drive your vehicle with P1468, but it is recommended to have the issue diagnosed and repaired as soon as possible to prevent further complications.

5. How can I diagnose OBDII code P1468 in my 2020 Chevrolet Silverado?

Diagnosing P1468 typically involves using an OBDII scanner to retrieve the trouble code, inspecting the EVAP system components for damage or leaks, and testing the purge pump and solenoid for proper functionality.

6. How can I repair OBDII code P1468 in my 2020 Chevrolet Silverado?

Repairing P1468 may involve replacing a faulty EVAP purge solenoid, repairing or replacing damaged vacuum hoses, checking and repairing electrical connections, or replacing the purge pump if necessary.

7. Can I reset OBDII code P1468 in my 2020 Chevrolet Silverado without fixing the underlying issue?

Resetting the code without addressing the root cause may temporarily turn off the Check Engine light, but the issue will likely reoccur. It is best to diagnose and repair the problem to prevent ongoing issues.

8. Is it possible to prevent OBDII code P1468 from appearing in my 2020 Chevrolet Silverado?

Regular maintenance and inspections of the EVAP system, including checking for leaks, ensuring proper seal of the gas cap, and timely replacement of worn components, can help prevent issues like P1468.

9. How long does it typically take to repair OBDII code P1468 in a 2020 Chevrolet Silverado?

The repair time for P1468 can vary depending on the exact cause of the issue and the availability of parts. It is recommended to consult with a qualified mechanic for a more accurate estimate.

10. Will OBDII code P1468 cause my 2020 Chevrolet Silverado to fail an emissions test?

Since P1468 is related to the EVAP system, it may affect the vehicle's emissions control. It is advisable to diagnose and repair the issue before undergoing an emissions test to ensure compliance.

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