P1468 2020 GMC Sierra Code - EVAP Purge Pump Overspeed
Quick Answer
The P1468 diagnostic trouble code (DTC) for a 2020 GMC Sierra indicates an issue with the EVAP (Evaporative Emission Control System) purge pump overspeed. Common causes include Faulty EVAP purge pump, Clogged charcoal canister, Vacuum leak in the EVAP system. 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 GMC Sierra indicates EVAP Purge Pump Overspeed.
- Common causes
- Common causes include Faulty EVAP purge pump, Clogged charcoal canister, Vacuum leak in the EVAP system.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1468 2020 GMC Sierra Description
The P1468 diagnostic trouble code (DTC) for a 2020 GMC Sierra indicates an issue with the EVAP (Evaporative Emission Control System) purge pump overspeed. The EVAP system is responsible for capturing and storing fuel vapors to prevent them from escaping into the atmosphere. The purge pump is a crucial component of this system, as it controls the flow of fuel vapors from the charcoal canister to the engine intake for combustion.
Common Causes of P1468 2020 GMC Sierra
- Faulty EVAP purge pump
- Clogged charcoal canister
- Vacuum leak in the EVAP system
- Malfunctioning EVAP pressure sensor
- Wiring or electrical issues
Symptoms of P1468 2020 GMC Sierra
- Check Engine Light illuminated
- Reduced fuel efficiency
- Rough idling or engine stalling
- Strong fuel odor
- Failed emissions test
How to Fix P1468 2020 GMC Sierra
- Perform a diagnostic scan to retrieve the specific trouble code and pinpoint the cause of the overspeed condition.
- Inspect the EVAP purge pump, charcoal canister, and associated components for any signs of damage or clogging.
- Test the EVAP pressure sensor and check for proper operation.
- Replace the faulty EVAP purge pump, charcoal canister, or sensor as needed.
- Clear the trouble code from the vehicle's computer and perform a test drive to ensure the issue has been resolved.
Cost to Fix P1468 2020 GMC Sierra
The cost of repairing a P1468 code on a 2020 GMC Sierra can vary depending on the specific cause of the issue and the labor rates in your area. Typically, the parts required for this repair, such as a new EVAP purge pump or charcoal canister, can range from $100 to $300. Labor costs can add an additional $100 to $200, bringing the total repair cost to approximately $200 to $500.
Need more information about the P1468 2020 GMC Sierra code?
Need more information on how to fix the P1468 2020 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1468 2020 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1468 2020 GMC Sierra Code
1. What are the common symptoms of OBDII code P1468 in a 2020 GMC Sierra?
- Common symptoms include rough idling, decreased fuel efficiency, and the illumination of the Check Engine light.
2. What does the OBDII code P1468 indicate in a 2020 GMC Sierra?
- The code P1468 indicates a problem with the EVAP purge pump overspeed in the vehicle's evaporative emission control system.
3. What are the possible causes of OBDII code P1468 in a 2020 GMC Sierra?
- Possible causes include a faulty EVAP purge valve, a clogged EVAP canister, wiring issues, or a malfunctioning PCM (Powertrain Control Module).
4. How can I diagnose the EVAP purge pump overspeed issue in my 2020 GMC Sierra?
- You can diagnose the issue by checking the EVAP purge valve for proper operation, inspecting the EVAP canister for blockages, and performing a thorough visual inspection of the system components.
5. What steps can I take to repair OBDII code P1468 in my 2020 GMC Sierra?
- Repair steps may include replacing the faulty EVAP purge valve, clearing any obstructions in the EVAP canister, checking and repairing any damaged wiring, or reprogramming the PCM if necessary.
6. Is it safe to continue driving my 2020 GMC Sierra with OBDII code P1468 present?
- It is generally not recommended to continue driving with this code present, as it can lead to further damage to the vehicle's emissions system and potentially affect its performance.
7. Can I reset the Check Engine light after repairing OBDII code P1468 in my 2020 GMC Sierra?
- Yes, once the issue has been diagnosed and repaired, you can reset the Check Engine light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.
8. How can regular maintenance help prevent OBDII code P1468 from recurring in my 2020 GMC Sierra?
- Regular maintenance, including checking and replacing worn components in the EVAP system, can help prevent issues like code P1468 from recurring in the future.
9. Are there any recalls or technical service bulletins related to OBDII code P1468 for 2020 GMC Sierra models?
- It is recommended to check with a GMC dealership or visit the National Highway Traffic Safety Administration (NHTSA) website for any relevant recalls or technical service bulletins related to this code.
10. How long does it typically take to repair OBDII code P1468 in a 2020 GMC Sierra?
- The repair time can vary depending on the exact cause of the issue and the experience of the technician, but it may take a few hours to a full day to diagnose and repair the problem.
Discuss the causes and fixes for P1468 2020 GMC Sierra OBDII Code
Code P1468 2020 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.