AutoCodes – Jeep – P0498 Jeep

P0498 Jeep Code - NVLD Vent Valve Solenoid Circuit Low

Quick Answer

The Natural Vacuum Leak Detection (NVLD) system is the next generation evaporative leak detection system that will first be used on vehicles equipped with the Next Generation Controller (NGC). Common causes include Faulty NVLD Vent Solenoid, NVLD Vent Solenoid harness is open or shorted, NVLD Vent Solenoid circuit poor electrical 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 Jeep indicates NVLD Vent Valve Solenoid Circuit Low.
Common causes: Common causes include Faulty NVLD Vent Solenoid, NVLD Vent Solenoid harness is open or shorted, NVLD Vent Solenoid circuit poor electrical 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 2,001

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Oct 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0498 Jeep Description

The Natural Vacuum Leak Detection (NVLD) system is the next generation evaporative leak detection system that will first be used on vehicles equipped with the Next Generation Controller (NGC). This new system replaces the leak detection pump as the method of evaporative system leak detection. This is to detect a leak equivalent to a 0.020 (0.5 mm) hole. This system has the capability to detect holes of this size very dependably.

OBDII Code P0498 Jeep - NVLD Vent Valve Solenoid Circuit Low - AutoCodes.com — P0498 Jeep Code - NVLD Vent Valve Solenoid Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0498 Jeep?

Faulty NVLD Vent Solenoid
NVLD Vent Solenoid harness is open or shorted
NVLD Vent Solenoid circuit poor electrical connection

How to Fix the DTC P0498 Jeep?

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 P0498 Jeep 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.

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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 Jeep Code

1. What does the OBDII code P0498 mean on a Jeep?

P0498 indicates that the NVLD (Natural Vacuum Leak Detection) vent valve solenoid circuit has a low voltage condition, which may affect the EVAP system's ability to detect fuel vapor leaks.

2. What are the common symptoms of code P0498 in a Jeep?

Symptoms may include an illuminated check engine light, reduced fuel efficiency, failed emissions tests, and, in some cases, a faint fuel odor near the vehicle.

3. What causes the P0498 code to appear on a Jeep?

Common causes include a faulty NVLD vent valve solenoid, damaged or corroded wiring, a blown fuse, or a problem with the vehicle's PCM (Powertrain Control Module).

4. Can a loose gas cap cause the P0498 code on a Jeep?

No, a loose gas cap typically triggers a different EVAP-related code. P0498 specifically points to an issue with the NVLD vent valve solenoid circuit.

5. How do I diagnose the P0498 code on my Jeep?

Start by checking the vent valve solenoid and its wiring for damage or corrosion. Use a multimeter to test for proper voltage and continuity in the circuit, and inspect the associated fuse.

6. How do I fix the P0498 code on a Jeep?

Repairs may include replacing a faulty NVLD vent valve solenoid, repairing or replacing damaged wiring, cleaning corroded connectors, or replacing a blown fuse.

7. Is the P0498 code serious, and can I continue driving my Jeep?

While the vehicle may still drive normally, ignoring the P0498 code can lead to poor fuel efficiency and failed emissions tests. It's best to address the issue promptly.

8. How much does it cost to repair the P0498 code on a Jeep?

The cost depends on the needed repair. Replacing the NVLD vent valve solenoid typically costs $100â€“$300, including parts and labor, depending on the location and shop rates.

9. Can I clear the P0498 code without fixing the problem?

Clearing the code with a scan tool will temporarily turn off the check engine light, but if the issue isn't resolved, the code will return after a few drive cycles.

10. Could a bad PCM cause the P0498 code on a Jeep?

While rare, a malfunctioning PCM can cause the P0498 code. However, itâ€™s more likely that the issue lies with the vent valve solenoid or its wiring. Always rule out simpler causes first.