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Home >> Lincoln >> 2012 >> MKZ Hybrid >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 36 (Engine Controls (Except Diesel & Hybrid) - Powertrain DTC Descriptions - DTC P0193 - P0563) >> DTC P0444: Evaporative Emission System Purge Control Valve A Circuit Open

DTC P0444: Evaporative Emission System Purge Control Valve A Circuit Open

WARNING: This page is about a different variant/trim than selected.
P0444 - EVAPORATIVE EMISSION SYSTEM PURGE CONTROL VALVE A CIRCUIT OPEN

Description:  The PCM monitors the state of the EVAPCP circuit output driver. This DTC sets when the signal moves outside the minimum or maximum limit for the commanded state.
Possible Causes: 
  • VPWR circuit open
  • EVAPCP circuit open
  • Damaged EVAP purge valve
  • Damaged PCM
Diagnostic Aids:  To verify normal function, monitor the EVAPCP PID. With the valve closed, the EVAPCP indicates 0% duty cycle. When the valve is commanded fully open, the EVAPCP indicates 100% duty cycle.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to PINPOINT TEST HZ .