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Engine-Codes – Dodge – P0446 Dodge

P0446 Dodge Code - EVAP Purge Solenoid Stuck Open

Quick Answer

The P0446 code for Dodge vehicles specifically indicates a problem with the EVAP (Evaporative Emission Control System) purge solenoid being stuck open. Common causes include Faulty EVAP Purge Solenoid: The most common cause of a P0446 code is a malfunctioning EVAP purge solenoid that is stuck open, Wiring Issues: Corrosion or damage to the wiring connected to the solenoid can also trigger this code, Vacuum Leaks: Any vacuum leaks in the EVAP system can disrupt the proper functioning of the solenoid. 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
P0446 Dodge indicates EVAP Purge Solenoid Stuck Open.
Common causes
Common causes include Faulty EVAP Purge Solenoid: The most common cause of a P0446 code is a malfunctioning EVAP purge solenoid that is stuck open, Wiring Issues: Corrosion or damage to the wiring connected to the solenoid can also trigger this code, Vacuum Leaks: Any vacuum leaks in the EVAP system can disrupt the proper functioning of the solenoid.
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 Sep 07, 2024
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Code P0446 Dodge Description

The P0446 code for Dodge vehicles specifically indicates a problem with the EVAP (Evaporative Emission Control System) purge solenoid being stuck open. The EVAP system is designed to capture and store fuel vapors from the fuel tank, preventing them from escaping into the atmosphere. The purge solenoid is responsible for controlling the flow of fuel vapor from the charcoal canister to the engine for combustion.

OBDII Code P0446 Dodge - EVAP Purge Solenoid Stuck Open
P0446 Dodge Code - EVAP Purge Solenoid Stuck Open

Common Causes of P0446 Dodge

  1. Faulty EVAP Purge Solenoid: The most common cause of a P0446 code is a malfunctioning EVAP purge solenoid that is stuck open.
  2. Wiring Issues: Corrosion or damage to the wiring connected to the solenoid can also trigger this code.
  3. Vacuum Leaks: Any vacuum leaks in the EVAP system can disrupt the proper functioning of the solenoid.
  4. Charcoal Canister Issues: If the charcoal canister is clogged or damaged, it can affect the flow of fuel vapors and lead to a P0446 code.
  5. PCM (Powertrain Control Module) Failure: In rare cases, a faulty PCM can incorrectly trigger a P0446 code.

Symptoms of P0446 Dodge

  1. Check Engine Light: The most common symptom associated with a P0446 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Rough Idling: A stuck open EVAP purge solenoid can cause rough idling or engine hesitation when driving.
  3. Decreased Fuel Efficiency: Since the fuel vapors are not being properly routed to the engine, fuel efficiency may decrease.
  4. Stalling: In severe cases, the engine may stall due to the improper air-fuel mixture caused by the stuck open solenoid.

How to Fix P0446 Dodge

  1. Diagnose the Issue: Use a scan tool to verify the P0446 code and perform a visual inspection of the EVAP system components to identify any obvious issues.
  2. Test the EVAP Purge Solenoid: Check the operation of the EVAP purge solenoid by applying voltage to it and listening for a click, indicating proper function. Replace the solenoid if it does not click.
  3. Inspect Wiring and Connections: Check the wiring harness and connections for any damage or corrosion. Repair or replace any damaged components.
  4. Check Charcoal Canister: Inspect the charcoal canister for any signs of damage or clogging. Replace if necessary.
  5. Clear the Code: After making the necessary repairs, clear the P0446 code from the vehicle's computer using a scan tool to reset the check engine light.

Cost to Fix P0446 Dodge

The cost of repairing a P0446 code can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. Generally, the cost of replacing the EVAP purge solenoid can range from $100 to $200, including parts and labor. However, if additional components need to be replaced or if wiring repairs are necessary, the cost can increase. It's recommended to consult with a trusted mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of your vehicle. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to inquire about these factors before proceeding with the repair.

When is the Code Detected?

The P0446 codes triggered when an improper voltage signal is sent to Engine Control Module (ECM) through EVAP canister vent control valve.

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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 P0446 Dodge Code

1. What does the OBDII code P0446 mean on a Dodge?

P0446 indicates a problem with the EVAP (Evaporative Emission Control System) vent control circuit, often caused by the purge solenoid being stuck open.

2. What are the symptoms of a P0446 code in a Dodge vehicle?

Common symptoms include a Check Engine Light, increased fuel odor near the vehicle, and potentially a slight drop in fuel efficiency.

3. What causes the P0446 code in Dodge vehicles?

The code can be triggered by a stuck-open purge solenoid, a clogged or damaged EVAP vent valve, faulty wiring, or even a damaged charcoal canister.

4. Can a loose gas cap cause a P0446 code on a Dodge?

While a loose gas cap often triggers other EVAP codes, it’s less likely to cause P0446. However, it’s worth checking as part of initial diagnostics.

5. How do I diagnose the P0446 code on my Dodge?

Start by inspecting the gas cap, EVAP canister, purge solenoid, and vent valve for damage or leaks. Use a scan tool to test EVAP system components if no visible issues are found.

6. Is it safe to drive with a P0446 code on a Dodge?

Yes, it’s generally safe to drive with this code, but ignoring it can lead to increased emissions and may eventually damage other EVAP components.

7. How do I fix the P0446 code in my Dodge?

Repairs may include replacing the stuck-open purge solenoid, cleaning or replacing the vent valve, repairing damaged wiring, or replacing the charcoal canister.

8. How much does it cost to repair a P0446 code on a Dodge?

The repair cost can range from $100 to $400, depending on whether the purge solenoid, vent valve, or other EVAP components need replacement.

9. Can a P0446 code cause my Dodge to fail an emissions test?

Yes, a P0446 code typically results in an automatic failure of an emissions test due to a malfunction in the EVAP system.

10. Can a scan tool clear the P0446 code on my Dodge after repairs?

Yes, after resolving the issue, a scan tool can clear the code. However, the code may return if the underlying problem persists.

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