AutoCodes – Chevrolet – P146A 2022 Chevrolet Silverado

P146A 2022 Chevrolet Silverado 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 2022 Chevrolet Silverado 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 844
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 P146A 2022 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 55,000 RPM for greater than 5 s.
OBDII Code P146A 2022 Chevrolet Silverado - EVAP Purge Pump Speed Too High - AutoCodes.com
P146A 2022 Chevrolet Silverado Code - EVAP Purge Pump Speed Too High

What are the Possible Causes of the DTC P146A 2022 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 P146A 2022 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 P146A 2022 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 P146A 2022 Chevrolet Silverado 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 P146A 2022 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P146A in a 2022 Chevrolet Silverado?

The common symptoms of code P146A in a 2022 Chevrolet Silverado include the check engine light illuminating on the dashboard and potential issues with the vehicle's evaporative emissions system.

2. What is the potential cause of OBDII code P146A in a 2022 Chevrolet Silverado?

Code P146A typically indicates that the EVAP purge pump speed is too high, which may be caused by a malfunctioning purge valve or a problem with the EVAP system's components.

3. How serious is OBDII code P146A in a 2022 Chevrolet Silverado?

While code P146A may not cause immediate drivability issues, it is important to address this code promptly to prevent potential damage to the vehicle's emissions system and ensure proper performance.

4. How can I diagnose OBDII code P146A in a 2022 Chevrolet Silverado?

Diagnosing code P146A may involve using an OBDII scanner to retrieve the specific fault code, inspecting the EVAP system components for any visible damage, and performing a smoke test to identify potential leaks.

5. What are some repair tips for addressing OBDII code P146A in a 2022 Chevrolet Silverado?

Repair tips for code P146A may include checking and replacing the EVAP purge valve, inspecting and repairing any damaged hoses or connections in the EVAP system, and clearing the fault code with an OBDII scanner after completing the repairs.

6. Can I drive my 2022 Chevrolet Silverado with OBDII code P146A?

While driving with code P146A may not immediately impact the vehicle's drivability, it is recommended to address the underlying issue promptly to prevent potential damage to the emissions system and ensure proper vehicle performance.

7. How much does it typically cost to repair OBDII code P146A in a 2022 Chevrolet Silverado?

The cost of repairing code P146A in a 2022 Chevrolet Silverado can vary depending on the specific cause of the issue, the labor rates in your area, and the parts required for the repair. It is advisable to consult with a professional mechanic for an accurate estimate.

8. Can OBDII code P146A in a 2022 Chevrolet Silverado cause other problems if left unaddressed?

If left unaddressed, code P146A in a 2022 Chevrolet Silverado can potentially lead to increased emissions, reduced fuel efficiency, and may eventually trigger additional fault codes related to the EVAP system.

9. Are there any DIY steps I can take to troubleshoot OBDII code P146A in my 2022 Chevrolet Silverado?

While some basic troubleshooting steps like checking for loose connections or damaged hoses in the EVAP system can be done by DIY enthusiasts, diagnosing and repairing code P146A often requires professional knowledge and equipment.

10. How long does it typically take to repair OBDII code P146A in a 2022 Chevrolet Silverado?

The time required to repair code P146A in a 2022 Chevrolet Silverado can vary based on the specific cause of the issue, the complexity of the repair process, and the availability of parts. A mechanic can provide a more accurate estimate based on the diagnosis.

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