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P1467 Chevrolet Code - EVAP Purge Pump Underspeed

Quick Answer

The P1467 code for Chevrolet indicates an issue with the EVAP (Evaporative Emission) Purge Pump underspeed. Common causes include Faulty Purge Pump: The most common cause of this code is a malfunctioning EVAP purge pump that is not operating at the correct speed, Wiring Issues: Corroded or damaged wiring connections to the purge pump can also trigger this code, Vacuum Leaks: Any vacuum leaks in the EVAP system can disrupt the flow of fuel vapors and lead to underspeed issues. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P1467 Chevrolet indicates EVAP Purge Pump Underspeed.
Common causes
Common causes include Faulty Purge Pump: The most common cause of this code is a malfunctioning EVAP purge pump that is not operating at the correct speed, Wiring Issues: Corroded or damaged wiring connections to the purge pump can also trigger this code, Vacuum Leaks: Any vacuum leaks in the EVAP system can disrupt the flow of fuel vapors and lead to underspeed issues.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
What is this?
Table of contents Created and updated by William Orellana on Aug 19, 2024
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Code P1467 Chevrolet Description

The P1467 code for Chevrolet indicates an issue with the EVAP (Evaporative Emission) Purge Pump underspeed. The EVAP system is designed to capture and store fuel vapors from the fuel tank to prevent them from escaping into the atmosphere. The purge pump is responsible for controlling the flow of vapors from the charcoal canister to the engine to be burned off. When the purge pump is not operating at the correct speed, it can lead to increased emissions and potentially cause performance issues in the vehicle.

OBDII Code P1467 Chevrolet - EVAP Purge Pump Underspeed
P1467 Chevrolet Code - EVAP Purge Pump Underspeed

Common Causes of P1467 Chevrolet

  1. Faulty Purge Pump: The most common cause of this code is a malfunctioning EVAP purge pump that is not operating at the correct speed.
  2. Wiring Issues: Corroded or damaged wiring connections to the purge pump can also trigger this code.
  3. Vacuum Leaks: Any vacuum leaks in the EVAP system can disrupt the flow of fuel vapors and lead to underspeed issues.
  4. Charcoal Canister Issues: A clogged or damaged charcoal canister can impede the proper operation of the EVAP system.
  5. ECM (Engine Control Module) Failure: In some cases, a faulty ECM can incorrectly interpret signals from the EVAP system and trigger this code.

Symptoms of P1467 Chevrolet

  1. Check Engine Light: The most common symptom associated with this code is the illumination of the check engine light on the dashboard.
  2. Reduced Fuel Efficiency: A malfunctioning EVAP purge pump can lead to decreased fuel efficiency as the engine may not be burning fuel vapors efficiently.
  3. Rough Idle: The engine may experience rough idling or stalling due to improper fuel vapor management.
  4. Failed Emissions Test: If the EVAP system is not functioning correctly, the vehicle may fail emissions tests due to increased emissions.
  5. Fuel Smell: A noticeable fuel smell inside or around the vehicle could indicate a problem with the EVAP system.

How to Fix P1467 Chevrolet

  1. Check EVAP Purge Pump: Test the EVAP purge pump to determine if it is functioning properly or needs to be replaced.
  2. Inspect Wiring: Check the wiring connections to the purge pump for any damage or corrosion and repair as needed.
  3. Check for Vacuum Leaks: Inspect the EVAP system for any vacuum leaks and repair or replace any damaged components.
  4. Replace Charcoal Canister: If the charcoal canister is clogged or damaged, it may need to be replaced to restore proper operation.
  5. Clear Codes: After making repairs, clear the diagnostic trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P1467 Chevrolet

The cost of repairing a P1467 code for a Chevrolet can vary depending on the specific cause of the issue and the labor rates in your area. On average, the cost of replacing an EVAP purge pump can range from $150 to $400, including parts and labor. Additional costs may be incurred if other components need to be replaced or if extensive diagnostic testing is required. It is recommended to consult with a professional mechanic to get an accurate estimate for your particular vehicle.

What does this mean?

Tech Notes for P1467 Chevrolet

Some 2019-2020 Chevrolet Silverado and GMC Sierra with 2.7L engine may have the Service Engine Soon (SES) Warning Light ON with Diagnostic Trouble Code (DTC) P1467 and/or P1469 set in the Engine Control Module (ECM). The cause is the Evaporative Emission Purge Pump may be filling with liquid fuel due to overfilling the fuel tank. There is a Factory Service Bulletin for this issue, the dealer will inspect the vehicle and replace the Evaporative Emission Purge Pump.

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Information for Specific Chevrolet 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 P1467 Chevrolet Code

1. What are common symptoms of OBDII code P1467 for a Chevrolet related to the EVAP purge pump underspeed issue?

The common symptoms include poor engine performance, rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1467 in a Chevrolet, indicating an EVAP purge pump underspeed problem?

Possible causes include a faulty EVAP purge pump, damaged wiring or connectors, a defective purge valve, or issues with the EVAP system's hoses or components.

3. How can I diagnose the EVAP purge pump underspeed issue causing OBDII code P1467 in my Chevrolet?

You can diagnose the problem by conducting a visual inspection of the EVAP system components, checking the wiring for any damage, testing the purge pump and valve functionality, and using a scan tool to monitor sensor data.

4. What are some repair tips for fixing OBDII code P1467 on a Chevrolet due to an EVAP purge pump underspeed fault?

Repair tips include replacing the faulty purge pump or valve, repairing any damaged wiring or connectors, ensuring proper sealing of the EVAP system components, and clearing the trouble code after completing repairs.

5. Can driving with an unresolved OBDII code P1467 related to an EVAP purge pump underspeed issue cause further damage to my Chevrolet?

Continued driving with this issue can potentially lead to decreased fuel efficiency, increased emissions, and further damage to the EVAP system components, so it's important to address the problem promptly.

6. How much does it typically cost to repair OBDII code P1467 caused by an EVAP purge pump underspeed fault in a Chevrolet?

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

7. Is it possible to prevent OBDII code P1467 from occurring in my Chevrolet due to an EVAP purge pump underspeed problem?

Regular maintenance of the EVAP system, checking for leaks or damage, and addressing any warning signs promptly can help prevent the occurrence of code P1467 related to the EVAP purge pump underspeed issue.

8. Can a DIY enthusiast with basic automotive knowledge fix OBDII code P1467 related to an EVAP purge pump underspeed problem in a Chevrolet?

Depending on the specific issue, a DIY enthusiast may be able to diagnose and repair the problem by following online guides or service manuals, but more complex issues may require professional assistance.

9. How long does it typically take to repair OBDII code P1467 caused by an EVAP purge pump underspeed issue in a Chevrolet?

The repair time can vary based on the specific problem and the expertise of the mechanic, but it may take anywhere from 1 to 3 hours to diagnose and fix the issue.

10. Will resetting the check engine light after repairing OBDII code P1467 related to an EVAP purge pump underspeed issue in a Chevrolet prevent it from reoccurring?

Resetting the check engine light after repairs is important, but if the underlying issue is not properly addressed, the code may reappear. It's crucial to ensure that the problem is completely resolved to prevent its recurrence.

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