DTC P0443 - EVAP System Purge Control Valve A Circuit

DTC DESCRIPTION P0443 - EVAP SYSTEM PURGE CONTROL VALVE A CIRCUIT

Description: This DTC sets when the EVAP purge valve signal moves outside the minimum or maximum limit for the commanded state.
Possible Causes: VPWR circuit open EVAPCP circuit open EVAPCP circuit short to ground EVAPCP circuit short to voltage Damaged EVAP purge valve
Diagnostic Aids: To verify normal function, monitor the EVAPCP PID and the signal voltage (PCM control side). With the valve closed, the EVAPCP PID indicates 0% duty cycle and voltage is approximately equal to battery voltage. When the valve is commanded fully open, the EVAPCP PID indicates 100% duty cycle and a voltage drop of 3 volts minimum is normal. The output state control (OSC) may be used to switch the EVAP purge valve output ON and OFF to verify the operation of the valve.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to PINPOINT TEST HX .