Diagnostic Aids
Perform this test only when directed by QUICK TEST. DTC P0455 will be set in PCM when it senses a -7 in. H2 O (-1.74 kPa) drop over 30 seconds. DTC P1443 will be set in PCM when it senses a -7 in. H2 O (-1.74 kPa) drop over 30 seconds with more than .02 lb./min. vapor flow.