2023 Mitsubishi P0440: What It Means & Is It Safe to Drive?
P0440 on the 2023 Mitsubishi: Evaporative Emission System Control System Malfunction. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
A general fault in the EVAP system—could be a leak, stuck valve, or sensor issue.
Common causes on the 2023 Mitsubishi
- Gas cap loose or faulty
- Purge or vent valve stuck
- Charcoal canister or hose leak
Symptoms
- Check Engine Light
Typical fixes
- Replace gas cap
- Test purge/vent valves
- Smoke test EVAP system
Repair cost range
For a 2023 Mitsubishi, repairs for P0440 typically fall between $20 and $400, depending on the root cause and labor rates in your area.
Known issues on Mitsubishi
Mitsubishi P0440 EVAP large leak is typically a gas cap seal or a cracked EVAP canister hose. On Outlander, the charcoal canister is mounted under the rear of the vehicle and the hoses can harden and crack from age. Replace the cap first, then inspect canister hose condition.
Most commonly affected models
Outlander 2004–2012Galant 2004–2009Eclipse 2006–2012