P0443 EVAP Purge Solenoid Circuit

NAME OF CODE
Proportional Purge Solenoid Circuit

WHEN MONITORED
With the ignition key on and the engine running.

SET CONDITION
After the arming conditions are satisfied: not powering down, not already in limp-in, time since the last solenoid activation > 72 micro seconds. The powertrain control module will set a trouble code if the actual state of the solenoid does not match the intended state. The Proportional Purge Solenoid (PPS) operates at a frequency of 200 Hz and is controlled by an engine controller circuit that senses the current being applied to the PPS and then adjusts that current to achieve the deal red purge flow. The PPS controls the purge rate of fuel vapors from the vapor canister and fuel tank to the engine intake manifold.

POSSIBLE CAUSES
- Open or shorted control circuit
- Open fused ignition switch output circuit
- Open or shorted solenoid control coil
- Powertrain control module failure
- Connector terminals
- Connector wires