P0446 Mitsubishi Code - EVAP System Vent Control Valve Circuit
Quick Answer
The Evaporative System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Missing Fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. 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 Mitsubishi indicates EVAP System Vent Control Valve Circuit.
- Common causes
- Common causes include Missing Fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
- 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.
Code P0446 Mitsubishi Description
This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized. 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.
This solenoid valve is used only for diagnosis, and usually remains opened.
What are the Possible Causes of the DTC P0446 Mitsubishi?
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Vent control valve harness is open or shorted
- Vent control valve circuit poor electrical connection
- Faulty vent control valve
How to Fix the DTC P0446 Mitsubishi?
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 P0446 Mitsubishi 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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Frequently Asked Questions about P0446 Mitsubishi Code
1. What does the OBDII code P0446 mean on a Mitsubishi?
P0446 indicates a malfunction in the EVAP system vent control valve circuit, which helps manage fuel vapors within the emissions system.
2. What are the common symptoms of code P0446 on a Mitsubishi?
Symptoms include the Check Engine Light turning on, possible difficulty refueling, and a slight decrease in fuel efficiency.
3. What causes the P0446 code in a Mitsubishi?
Common causes include a faulty vent control valve, damaged wiring or connectors, a clogged EVAP system, or issues with the charcoal canister.
4. Can I drive my Mitsubishi with the P0446 code?
While it may be safe to drive in the short term, ignoring the issue can lead to increased emissions and potential damage to the EVAP system.
5. How do I fix the P0446 code on my Mitsubishi?
Repairs may involve replacing the vent control valve, cleaning or inspecting the EVAP system, or repairing damaged wiring or connectors.
6. How much does it cost to fix the P0446 code on a Mitsubishi?
Repair costs can range from $100 to $300 depending on the parts needed and labor involved, with vent valve replacement being a common fix.
7. Can a P0446 code cause my Mitsubishi to fail an emissions test?
Yes, a P0446 code can result in your vehicle failing an emissions test due to improper EVAP system operation.
8. How can I prevent the P0446 code from occurring on my Mitsubishi?
Regular maintenance of the EVAP system, including checking for leaks or clogs, can help prevent this code.
9. Does the P0446 code affect fuel economy in a Mitsubishi?
It may slightly impact fuel efficiency due to improper handling of fuel vapors, but the effect is usually minimal.
10. Can a loose gas cap cause the P0446 code on a Mitsubishi?
A loose or damaged gas cap is unlikely to cause P0446 specifically but may trigger other EVAP-related codes.
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