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P0499 Chrysler Code - NVLD Vent Valve Solenoid Circuit High

Quick Answer

The P0499 Chrysler code refers to an issue with the NVLD (Natural Vacuum Leak Detection) vent valve solenoid circuit being detected as high by the vehicle's onboard computer system. Common causes include Faulty NVLD vent valve solenoid, Wiring or electrical issues in the solenoid circuit, Vacuum leaks in the system. 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
P0499 Chrysler indicates NVLD Vent Valve Solenoid Circuit High.
Common causes
Common causes include Faulty NVLD vent valve solenoid, Wiring or electrical issues in the solenoid circuit, Vacuum leaks in the system.
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.
What is this?
Table of contents Created and updated by William Orellana on Aug 30, 2024
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Code P0499 Chrysler Description

The P0499 Chrysler code refers to an issue with the NVLD (Natural Vacuum Leak Detection) vent valve solenoid circuit being detected as high by the vehicle's onboard computer system. The NVLD system is responsible for monitoring the fuel tank for leaks and emissions control. When this code is triggered, it indicates a problem with the vent valve solenoid circuit, which can lead to issues with the vehicle's emissions control system. This can affect the vehicle's performance, fuel efficiency, and overall emissions output. If left unaddressed, it can potentially lead to increased emissions, failed emissions tests, and even damage to other components of the emissions control system.

OBDII Code P0499 Chrysler - NVLD Vent Valve Solenoid Circuit High
P0499 Chrysler Code - NVLD Vent Valve Solenoid Circuit High

Common Causes of P0499 Chrysler

  1. Faulty NVLD vent valve solenoid
  2. Wiring or electrical issues in the solenoid circuit
  3. Vacuum leaks in the system
  4. Faulty PCM (Powertrain Control Module)
  5. Corrosion or damage to connectors or terminals

Symptoms of P0499 Chrysler

  1. Check Engine Light illuminated on the dashboard
  2. Decreased fuel efficiency
  3. Rough idling or stalling
  4. Strong fuel odor
  5. Failed emissions test

How to Fix P0499 Chrysler

  1. Diagnose the issue by using a scan tool to read the code and inspect the NVLD system components.
  2. Test the NVLD vent valve solenoid for proper operation and replace if necessary.
  3. Check the wiring and connectors for any damage or corrosion, repairing or replacing as needed.
  4. Clear the diagnostic code and test drive the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostics may be needed to identify any underlying issues with the PCM or other components.

Cost to Fix P0499 Chrysler

The typical repair costs for addressing a P0499 Chrysler code can range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor. It's important to note that additional diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.

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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 P0499 Chrysler Code

1. What are the common symptoms of OBDII code P0499 in a Chrysler vehicle?

- Common symptoms include the check engine light illuminating, rough idling, decreased fuel efficiency, and potential problems with the vehicle's emission system.

2. What does the OBDII code P0499 Chrysler indicate?

- The code P0499 indicates a potential issue with the NVLD (Natural Vacuum Leak Detection) vent valve solenoid circuit being too high.

3. What are some possible causes of the NVLD Vent Valve Solenoid Circuit High code in a Chrysler?

- Common causes include a faulty NVLD vent valve solenoid, damaged wiring or connectors in the circuit, vacuum leaks, or issues with the evaporative emission control system.

4. How can I diagnose the NVLD Vent Valve Solenoid Circuit High code in my Chrysler?

- Diagnostic steps may involve checking the wiring and connectors for any damage, testing the NVLD vent valve solenoid, inspecting the vacuum lines for leaks, and using an OBDII scanner to reset the code for further monitoring.

5. Can I continue driving my Chrysler with the P0499 code present?

- It is generally not recommended to drive the vehicle with the P0499 code active, as it may lead to increased emissions, poor fuel efficiency, and potential damage to the emission control system.

6. How can I repair the NVLD Vent Valve Solenoid Circuit High issue in my Chrysler?

- Repair may involve replacing the faulty NVLD vent valve solenoid, repairing or replacing damaged wiring or connectors, fixing any vacuum leaks, and clearing the error code to see if the issue persists.

7. Are there any DIY tips for addressing the P0499 code in a Chrysler?

- While basic troubleshooting like checking for loose connections and visible damage can be done by the owner, more complex repairs and component replacements may require professional assistance.

8. How much does it typically cost to fix the NVLD Vent Valve Solenoid Circuit High problem in a Chrysler?

- The cost of repairs can vary depending on the specific issue, location, and labor rates, but it may range from around $100 to $300 for parts and labor.

9. Can a P0499 code be a recurring problem in Chrysler vehicles?

- If the root cause of the issue is not properly addressed during repairs, the P0499 code may reoccur, highlighting the importance of thorough diagnostics and repairs.

10. Is the NVLD Vent Valve Solenoid Circuit High code a common issue in Chrysler vehicles?

- While the P0499 code may not be as common as some other OBDII codes, it can still occur in Chrysler vehicles due to various factors affecting the EVAP system and emission control components.

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