Detection Condition
WARNING: This page is about a different car, the 2003 Mazda MPV and 2002 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
PCM monitors EVAP leak detection pump load current while evaporative leak monitor is operating. If decrease in pump load current is less than specification after reference current value is obtained, PCM determines Change Over Valve (COV) malfunction and DTC is set. This is an intermittent monitor. MIL illuminates if PCM detects malfunction in 2 consecutive drive cycles.