Detection Condition

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

PCM measures purge line pressure, which is the vacuum when following Monitoring Conditions are present. If vacuum between charcoal canister and intake manifold does not reach specified, PCM determines EVAP system has clogging.

Monitoring Conditions:

Engine speed: 1130-2720 RPM
Throttle opening angle: 10.2-25 percent
Vehicle speed: 24.8-49.7 MPH

This is an intermittent monitor (Evaporative system monitor). MIL illuminates if PCM detects malfunction condition in two consecutive drive cycles or in one drive cycle while DTC for same malfunction has been stored in PCM. PENDING CODE is available if PCM detects malfunction condition during first drive cycle. FREEZE FRAME DATA is available. DTC is stored in PCM memory.