2012 Acura P0440: What It Means & Is It Safe to Drive?
P0440 on the 2012 Acura: 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 2012 Acura
- 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 2012 Acura, repairs for P0440 typically fall between $20 and $400, depending on the root cause and labor rates in your area.
Known issues on Acura
Acura P0440 EVAP large leak is typically a gas cap or a failed purge valve solenoid. These models share Honda's EVAP architecture. The purge solenoid mounted on the intake manifold is the most common active component failure. Replace the cap first, then inspect the purge valve.
Most commonly affected models
TL 2004–2008MDX 2003–2006TSX 2004–2008