P146A 2020 GMC Sierra Code - EVAP Purge Pump Speed Too High
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
- P146A 2020 GMC Sierra indicates EVAP Purge Pump Speed Too High.
- 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.
Code P146A 2020 GMC Sierra Description
What are the Possible Causes of the DTC P146A 2020 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 P146A 2020 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 P146A 2020 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 P146A 2020 GMC Sierra code?
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Frequently Asked Questions about P146A 2020 GMC Sierra Code
1. What are the common symptoms of OBDII code P146A in a 2020 GMC Sierra?
- Common symptoms include the check engine light coming on, rough idling, decreased fuel efficiency, and possible fuel odors.
2. What does the OBDII code P146A for a 2020 GMC Sierra indicate?
- This code indicates that the EVAP purge pump speed is too high, which may point to an issue with the evaporative emission control system.
3. What are some possible causes of OBDII code P146A in a 2020 GMC Sierra?
- Possible causes include a faulty EVAP purge solenoid, a stuck open purge valve, a leak in the EVAP system, or a malfunctioning pressure sensor.
4. How can I diagnose the OBDII code P146A in my 2020 GMC Sierra?
- Diagnosing this code typically involves checking the EVAP system for leaks, testing the purge valve and solenoid, and inspecting the pressure sensor for proper operation.
5. Can I continue driving my 2020 GMC Sierra with OBDII code P146A?
- It is not recommended to continue driving with this code present, as it can lead to decreased fuel efficiency and potential damage to emissions components.
6. How can I repair OBDII code P146A in my 2020 GMC Sierra?
- Repair steps may include replacing the EVAP purge solenoid, fixing any leaks in the EVAP system, checking and cleaning the purge valve, or replacing the pressure sensor if necessary.
7. Will resetting the check engine light make OBDII code P146A go away in my 2020 GMC Sierra?
- Resetting the check engine light may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear upon further driving.
8. Is OBDII code P146A a serious issue in a 2020 GMC Sierra?
- While this code may not cause immediate drivability issues, it is important to address it promptly to ensure proper functioning of the EVAP system and maintain emissions compliance.
9. Can a DIY enthusiast fix OBDII code P146A in a 2020 GMC Sierra?
- Depending on the root cause, some DIY enthusiasts may be able to address this code by following repair guides and using basic tools, but more complex issues may require professional assistance.
10. How much does it typically cost to repair OBDII code P146A in a 2020 GMC Sierra?
- The cost of repairs for this code can vary depending on the specific issue, parts needed, and labor rates, but it is advisable to budget for potential diagnostic fees and replacement components.
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