AutoCodesGMC – P0498 2018 GMC Sierra

P0498 2018 GMC Sierra Code - Evaporative Emission System Vent Valve Control Circuit Low

Quick Answer

The Evaporative Emission (EVAP) Vent Solenoid Valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Faulty Evaporative Emission Vent Solenoid Valve, Evaporative Emission Vent Solenoid Valve harness is open or shorted, Evaporative Emission Vent Solenoid Valve electrical circuit poor connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means
P0498 2018 GMC Sierra indicates Evaporative Emission System Vent Valve Control Circuit Low.
Common causes
Common causes include Faulty Evaporative Emission Vent Solenoid Valve, Evaporative Emission Vent Solenoid Valve harness is open or shorted, Evaporative Emission Vent Solenoid Valve electrical circuit poor connection.
Severity
Low - monitor the vehicle and repair when practical.
Can I drive?
The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
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Code Popularity 441
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 27, 2022
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Code P0498 2018 GMC Sierra Description

The Evaporative Emission (EVAP) Vent Solenoid Valve is located on the EVAP canister and is used to seal the canister vent. The Evaporative Emission Vent Solenoid Valve responds to signals from the Engine Control Module (ECM). Battery voltage is supplied to the EVAP vent solenoid valve through a fuse. The ECM grounds the EVAP Vent Solenoid Valve control circuit through an internal switch called a driver. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components. The ECM monitors the status of the driver. A scan tool will display the commanded state of the EVAP Vent Solenoid Valve as Not Venting (On) or Venting (Off). The Diagnostic Trouble Code (DTC) will be set when the ECM detects the EVAP vent solenoid valve control circuit is shorted to the ground within 0.25 s.
OBDII Code P0498 2018 GMC Sierra - Evaporative Emission System Vent Valve Control Circuit Low - AutoCodes.com
P0498 2018 GMC Sierra Code - Evaporative Emission System Vent Valve Control Circuit Low

What are the Possible Causes of the DTC P0498 2018 GMC Sierra?

  • Faulty Evaporative Emission Vent Solenoid Valve
  • Evaporative Emission Vent Solenoid Valve harness is open or shorted
  • Evaporative Emission Vent Solenoid Valve electrical circuit poor connection
  • Faulty Engine Control Module (ECM)

How to Fix the DTC P0498 2018 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0498 2018 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 P0498 2018 GMC Sierra 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 P0498 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code P0498 in a 2018 GMC Sierra?

The common symptoms of code P0498 include the illuminated check engine light, reduced fuel efficiency, and potential rough idling or stalling of the vehicle.

2. What can cause the OBDII code P0498 in a 2018 GMC Sierra?

The code P0498 in a 2018 GMC Sierra is usually caused by a malfunction in the evaporative emission system vent valve control circuit, which can be due to wiring issues, a faulty vent valve, or a problem with the control module.

3. How do I diagnose the OBDII code P0498 in my 2018 GMC Sierra?

Diagnosing code P0498 involves using a scan tool to check the stored codes, inspecting the wiring and connectors related to the vent valve, and testing the vent valve itself for proper operation.

4. Can I continue driving my 2018 GMC Sierra with OBDII code P0498?

It is not recommended to drive your GMC Sierra with code P0498 unaddressed, as it can lead to increased emissions, decreased fuel efficiency, and potentially more severe engine problems if left unresolved.

5. How can I repair OBDII code P0498 in my 2018 GMC Sierra?

Repairing code P0498 may involve replacing the evaporative emission system vent valve, repairing any damaged wiring or connectors, or addressing issues with the control module as recommended by a professional mechanic.

6. Can a DIY enthusiast fix OBDII code P0498 in a 2018 GMC Sierra?

While some aspects of diagnosing and repairing code P0498 can be tackled by a DIY enthusiast with the necessary tools and knowledge, it is advisable to consult a professional mechanic for accurate diagnosis and proper repair to ensure the issue is resolved correctly.

7. Will resetting the check engine light resolve code P0498 in my 2018 GMC Sierra?

Simply resetting the check engine light without addressing the underlying issue causing code P0498 will not solve the problem. It is crucial to diagnose the root cause and perform the necessary repairs to clear the code and prevent it from reoccurring.

8. How much does it cost to fix OBDII code P0498 in a 2018 GMC Sierra?

The cost of repairing code P0498 in a 2018 GMC Sierra can vary depending on the specific cause of the issue, the parts needed for repair, and the labor rates at the repair shop. It is recommended to obtain quotes from different mechanics to compare costs.

9. Is OBDII code P0498 a common issue in 2018 GMC Sierra vehicles?

While not extremely common, code P0498 related to the evaporative emission system vent valve control circuit low can occur in 2018 GMC Sierra vehicles due to various factors such as age, mileage, and driving conditions.

10. Can a clogged fuel filter cause OBDII code P0498 in a 2018 GMC Sierra?

While a clogged fuel filter can impact engine performance and fuel delivery, it is not directly linked to causing code P0498 in a 2018 GMC Sierra. The code is typically specific to issues within the evaporative emission system vent valve control circuit.

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