What does code P1446 mean?

Q: What does code P1446 mean?

EVAP Canister Vent Control Valve Closed. P1446 on Nissan vehicles means the engine computer has commanded the EVAP canister vent control valve to open, but the valve remains stuck closed, so the evaporative emission system cannot draw fresh air into the canister. The computer detects this by monitoring the fuel tank pressure sensor during a self-test and seeing no expected pressure change when the vent valve should be open.

DTC codes / Nissan codes / P1446

P1446 · NissanEVAP Canister Vent Control Valve Closed

P1446 on Nissan vehicles means the engine computer has commanded the EVAP canister vent control valve to open, but the valve remains stuck closed, so the evaporative emission system cannot draw fresh air into the canister. The computer detects this by monitoring the fuel tank pressure sensor during a self-test and seeing no expected pressure change when the vent valve should be open.

SystemPowertrain

Code typeNissan specific

SeverityLow

Fix difficultyIntermediate

AreaAuxiliary emission controls

Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.