EGR Flow Test Count

Scan Tool Range 0 to 255. This indicates the number of EGR flow test samples that were collected during the current ignition cycle. The maximum number of samples allowed is one during normal operation. If the PCM battery feed has been disconnected or a DTC P0401 has been cleared, several EGR flow test samples will be allowed during the next ignition cycle. This is to allow repair verification during a single ignition cycle.