Detection Condition
DTC P0455 indicates a substantial leak or blockage has been detected in EVAP system when there is -7 in. H2 O (-1.74 kPa) or less vacuum for 30 seconds evaluation time.
DTC P1443 indicates a substantial leak and no purge flow has been detected in EVAP system when there is -7 in. H2 O (-1.74 kPa) or less vacuum for 30 seconds evaluation time with less than 0.02 lb/min vapor flow.