DTC P1449 - Canister Drain Cut Valve (CDCV), Open Or Short Circuit: Condition

WARNING: This page is about a different car, the 1997 Mazda Millenia. However, it is still accessible from the selected car via links, so may be relevant.

DTC is set when ECM detects open or short circuit in CDCV system with ignition switch on. Possible causes are:

CDCV malfunction.
Open or short circuit between terminal "A" on CDCV and main relay.
Open or short circuit between terminal "B" on CDCV and terminal No. 4R on Engine Control Module (ECM).