FixVault

Evaporative Emissions DTCS

EVAPORATIVE EMISSIONS (PCM) DIAGNOSTICS TROUBLE CODE (DTC) LIST

DTC Description Source Perform Test
P0442 Small leak detected in EVAP system (As small as 1.02 mm [0.040 inch]) PCM Go to PINPOINT TEST A .
P0455 Major leak or no flow detected PCM Go to PINPOINT TEST B .
P0456 Very small leak detected in EVAP system (As small as 0.51 mm [0.020 inch]) PCM Go to PINPOINT TEST A .
P0457 Check for missing or leaking fuel filler cap. PCM Go to PINPOINT TEST A
P1443 Very small or no purge flow detected PCM Go to PINPOINT TEST B .
P1450 Excessive vacuum detected in the fuel tank PCM Go to PINPOINT TEST C .