Investigating P0446 on Your 2024 Mitsubishi Outlander
A P0446 code on your 2024 Mitsubishi Outlander points to an EVAP vent control circuit malfunction. Built on the CMF-C/D platform shared with the Nissan Rogue, the Outlander uses a canister vent control valve and purge control solenoid. Note: if you have the Outlander PHEV, the EVAP system still exists for the gas engine side.
Under full warranty, this is a no-cost dealer repair.
Symptoms to Watch For
- Check engine light with P0446 stored
- Possible fuel fill difficulty or slow fueling
- EVAP system monitor incomplete
Top Suspects Ranked
- Canister Vent Control Valve Failure (High Likelihood): The vent valve sticks open or closed. Common on Nissan/Mitsubishi shared platforms. Warranty-covered replacement.
- ECM Software Calibration (High Likelihood): Updated EVAP monitoring thresholds. Free reflash at the dealer.
- Purge Control Solenoid (Medium Likelihood): Incorrect purge flow affecting vent circuit readings. Warranty-covered.
- Vent Valve Wiring or Connector (Medium Likelihood): Corrosion or loose connection at the canister vent valve plug. Warranty-covered.
- Charcoal Canister Saturation (Low Likelihood): Overfilling fuel can saturate the canister. Warranty-covered if defective.
Diagnostic Path
A Mitsubishi dealer will use MUT-III diagnostics to command the vent valve and monitor circuit response. They'll check resistance, voltage, and wiring integrity.
Warranty Coverage
Your 2024 Outlander is covered by Mitsubishi's 5-year/60,000-mile basic warranty and 10-year/100,000-mile powertrain warranty. All EVAP repairs are free at the dealer.
Safe to Drive?
Yes. P0446 is an emissions circuit code that doesn't affect the Outlander's engine performance, S-AWC system, or driving dynamics.