What does code P0446 mean on a Ram and is it safe to drive?
P0446: Evaporative Emission System Vent Control Circuit. Here's what it means on your Ram, what usually causes it, what repairs typically cost, and how safe it is to keep driving.
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What this code means
The PCM has detected a problem with the EVAP vent control circuit, often caused by a stuck or failed vent valve.
Common causes for your Ram
- Failed EVAP vent solenoid
- Corroded wiring or connector at vent valve
- Blocked vent due to dust, rust, or spider webs
Symptoms
- Check Engine Light
- Possible difficulty filling fuel tank (nozzle keeps clicking off)
Typical fixes
- Replace EVAP vent valve/solenoid
- Clean or clear vent and charcoal canister area
- Repair wiring
Repair cost range
For a Ram, repairs for P0446 often fall between $150 and $450, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
Known issues on Ram
Ram P0446 EVAP vent solenoid fault typically involves the NVLD module or canister vent valve near the fuel tank. Check for corrosion at the solenoid connector—Ram trucks in northern states frequently corrode these connections from road salt exposure.
Most commonly affected models
Ram 1500 2009–2018Ram 1500 Classic 2003–2008