What does code P0440 mean on a Dodge and is it safe to drive?
P0440: Evaporative Emission System Control System Malfunction. Here's what it means on your Dodge, 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 Dodge
- 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 Dodge, 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 Dodge
Dodge P0440 on Durango and Caravan most commonly comes from the NVLD module mounted near the fuel tank. The NVLD switch and pump are common failure points—inspect the NVLD hose connections for cracks before replacing the module.
Most commonly affected models
Durango 2000–2009Grand Caravan 2001–2007Dakota 2000–2007