DTC P1443: Evaporative Emission System Control Valve (Low/No Flow)

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2006 Mercury Mountaineer, 2006 Mercury Monterey, 2006 Mercury Montego, 2006 Mercury Mariner, and 2006 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

P1443 - EVAPORATIVE EMISSION SYSTEM CONTROL VALVE (LOW/NO FLOW)

Description:	A fuel tank pressure change greater than minus (-) 7 inches of water in 30 seconds occurred with a purge, fuel vapor, flow at less than 0.02 lb/min (0.15 gm/s).
Possible Causes:	Blocked fuel vapor hose between the EVAP canister purge valve and the fuel tank pressure (FTP) sensor Blocked fuel vapor hose between the EVAP canister purge valve and the engine intake manifold Blocked vacuum hose between the EVAP canister purge valve solenoid and the engine intake manifold EVAP canister purge valve mechanically stuck closed
Diagnostic Aids:	Check for blockages between the fuel tank, the EVAP canister purge valve, and the engine intake manifold. Check for obstructions in the EVAP canister purge valve diaphragm and ports.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	-	-	GO to Pinpoint Test HX .