What does code P0440 mean on a Volvo and is it safe to drive?
P0440: Evaporative Emission System Control System Malfunction. Here's what it means on your Volvo, what usually causes it, what repairs typically cost, and how safe it is 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 for your Volvo
- 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 Volvo, repairs for P0440 often fall between $20 and $400, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Volvo
Volvo P0440 EVAP large leak is typically a gas cap seal or a cracked EVAP canister hose. On XC90, the charcoal canister is under the vehicle near the rear axle and can crack from debris. Replace the gas cap first, then smoke test the canister hose routing.
Most commonly affected models
XC90 2003–2014S60 2001–2009V70 2001–2007