AutoCodes – Chevrolet – P1490 2022 Chevrolet Silverado

P1490 2022 Chevrolet Silverado Code - EVAP Purge Pump Voltage Sensor Performance

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: P1490 2022 Chevrolet Silverado indicates EVAP Purge Pump Voltage Sensor Performance.
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.

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Code Popularity 506

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 18, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1490 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 Voltage and Ignition Voltage are not within 2.0 V of each other for greater than 1 s.

OBDII Code P1490 2022 Chevrolet Silverado - EVAP Purge Pump Voltage Sensor Performance - AutoCodes.com — P1490 2022 Chevrolet Silverado Code - EVAP Purge Pump Voltage Sensor Performance

What does this mean?

What are the Possible Causes of the DTC P1490 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 P1490 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 P1490 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 P1490 2022 Chevrolet Silverado code?

Need more information on how to fix the P1490 2022 Chevrolet Silverado code? Get Access to Factory Service Manuals

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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 P1490 2022 Chevrolet Silverado Code

1. What are common symptoms of OBDII code P1490 in a 2022 Chevrolet Silverado?

The common symptoms of OBDII code P1490 in a 2022 Chevrolet Silverado include rough idling, decreased fuel efficiency, and the illumination of the check engine light.

2. What does the OBDII code P1490 indicate in a 2022 Chevrolet Silverado?

OBDII code P1490 in a 2022 Chevrolet Silverado indicates a fault with the EVAP purge pump voltage sensor performance.

3. What are possible causes of OBDII code P1490 in a 2022 Chevrolet Silverado?

Possible causes of OBDII code P1490 in a 2022 Chevrolet Silverado include a faulty EVAP purge pump, wiring issues, or a malfunctioning voltage sensor.

4. How can I diagnose the OBDII code P1490 in my 2022 Chevrolet Silverado?

Diagnosing OBDII code P1490 in a 2022 Chevrolet Silverado involves using an OBDII scanner to retrieve the trouble code and inspecting the EVAP system for any visible signs of damage or wear.

5. Is it safe to continue driving with OBDII code P1490 in my 2022 Chevrolet Silverado?

It is not recommended to continue driving with OBDII code P1490 in a 2022 Chevrolet Silverado as it can lead to further damage to the vehicle's emission control system.

6. How can I repair OBDII code P1490 in my 2022 Chevrolet Silverado?

Repairing OBDII code P1490 in a 2022 Chevrolet Silverado typically involves replacing the faulty EVAP purge pump, addressing any wiring issues, or replacing the malfunctioning voltage sensor.

7. Can I clear the OBDII code P1490 in my 2022 Chevrolet Silverado with a simple reset?

While clearing the code with a reset may temporarily turn off the check engine light, it is important to address the underlying issue causing OBDII code P1490 in a 2022 Chevrolet Silverado to prevent future problems.

8. How much does it cost to fix OBDII code P1490 in a 2022 Chevrolet Silverado?

The cost of fixing OBDII code P1490 in a 2022 Chevrolet Silverado can vary depending on the exact cause of the issue, but it may range from $100 to $500 for parts and labor.

9. Are there any maintenance tips to prevent OBDII code P1490 in a 2022 Chevrolet Silverado?

Regularly inspecting and maintaining the EVAP system, including the purge pump and voltage sensor, can help prevent issues that lead to OBDII code P1490 in a 2022 Chevrolet Silverado.

10. Can a DIY enthusiast repair OBDII code P1490 in a 2022 Chevrolet Silverado?

While some DIY enthusiasts may have the skills to repair OBDII code P1490 in a 2022 Chevrolet Silverado, it is recommended to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.