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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4SO U5 (PZEV))) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0442 Evaporative Emission Control System Leak Detected (Small Leak) >> Outline Of Diagnosis >> 0.02-inch Diagnosis

0.02-inch Diagnosis

WARNING: This page is about a different variant/trim than selected.
Fig 1: Fuel Tank Pressure Sensor. 0.02-Inch Diagnosis Mode
G03829157Courtesy of SUBARU OF AMERICA, INC.
MODE DESCRIPTION

Mode Mode Description Diagnosis Period
Mode A (0 point correction) Wait until the tank pressure returns to 0 point 0 kPa (0 mmHg, 0 inHg) when tank pressure is high. 0 - 12 seconds
Mode B (Introduce negative pressure) Introduce the intake manifold pressure to the fuel tank and reduce the tank pressure to the desired value. 0 - 27 seconds
Mode C (Hold negative pressure) Wait until the tank pressure returns to the start pressure of P2 calculation. 0 - 20 seconds
Mode D (Negative pressure variation calculation) Calculate the time until the tank pressure becomes the end pressure of P2 calculation. Make advanced OK judgment when the tank pressure does not become the end pressure of P2 calculation. 0 - 200 seconds
Mode E (Evaporative gas amount calculation) Calculate the amount of evaporative gas yield (P1). 0 - 280 seconds