P1490 2021 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 2021 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.
Code P1490 2021 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1490 2021 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 2021 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 2021 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 2021 Chevrolet Silverado code?
Need more information on how to fix the P1490 2021 Chevrolet Silverado code? Get Access to Factory Service Manuals
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Frequently Asked Questions about P1490 2021 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P1490 on a 2021 Chevrolet Silverado?
The common symptoms include the check engine light being illuminated, decreased fuel efficiency, and potential issues with the vehicle's emission system.
2. What could be the possible causes of OBDII code P1490 on a 2021 Chevrolet Silverado?
Possible causes of this code could be a faulty EVAP purge pump, a malfunctioning EVAP system pressure sensor, wiring issues, or a problem with the vehicle's onboard computer.
3. How can I diagnose the EVAP purge pump voltage sensor performance issue on my 2021 Chevrolet Silverado?
Diagnosis involves using an OBDII scanner to retrieve the specific fault code, checking the integrity of the wiring and connections related to the purge pump, and testing the EVAP system components for proper functioning.
4. Can I continue driving my 2021 Chevrolet Silverado with the P1490 code present?
It is generally not recommended to continue driving the vehicle with this code present, as it can lead to more severe issues and potential damage to the emission control system.
5. How can I repair the EVAP purge pump voltage sensor performance issue on my 2021 Chevrolet Silverado?
Repairing this issue may involve replacing the faulty purge pump, repairing any damaged wiring or connections, or recalibrating the EVAP system components. It is recommended to consult a professional mechanic for proper diagnosis and repair.
6. Are there any DIY tips for troubleshooting the P1490 code on a 2021 Chevrolet Silverado?
DIY tips may include visually inspecting the EVAP system components for visible damage, checking for loose connections, and ensuring the gas cap is tightened properly. However, for a thorough diagnosis and repair, it is best to seek professional help.
7. How much does it typically cost to repair the EVAP purge pump voltage sensor performance issue on a 2021 Chevrolet Silverado?
The cost of repairs can vary depending on the extent of the issue, the cost of replacement parts, and labor fees. It is advisable to get quotes from different mechanics or auto repair shops for an accurate estimate.
8. Can a faulty EVAP purge pump affect the overall performance of my 2021 Chevrolet Silverado?
Yes, a faulty EVAP purge pump can affect the vehicle's overall performance by causing issues with fuel efficiency, emissions, and potentially leading to other problems if left unrepaired.
9. Will resetting the check engine light resolve the P1490 code issue on my 2021 Chevrolet Silverado?
Resetting the check engine light may temporarily turn off the warning indicator, but it will not fix the underlying issue causing the P1490 code. It is crucial to address the root cause of the problem for a permanent solution.
10. How often should I have the EVAP system components inspected on my 2021 Chevrolet Silverado to prevent the P1490 code from occurring?
It is recommended to have the EVAP system components inspected regularly as part of routine maintenance to prevent issues like the P1490 code from occurring. Consult your vehicle's manual for specific maintenance schedules.
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