LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2004 >> Highlander Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 463 (Engine Control System (SFI) - Diagnostics) >> DTC P0442: Evaporative Emission Control System Leak Detected (Small Leak); DTC P0456: Evaporative Emission Control System Leak Detected (Very Small Leak) >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2004 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL MALFUNCTION THRESHOLDS

Detection Criteria Threshold
0.020 inch malfunction detection: 
Fuel tank pressure changing value, from -2.0 kPa (-15 mmHg), for 5 seconds Increase more than 0.067 kPa (0.5 mmHg)
Fuel tank pressure changing value, from -2.7 kPa (-20 mmHg), for 5 seconds Increase more than 0.067 kPa (0.5 mmHg)
0.040 inch malfunction detection: 
Fuel tank pressure changing value, from -2.0 kPa (-15 mmHg), for 5 seconds Increase more than 0.24 kPa (1.8 mmHg)
Fuel tank pressure changing value, from -2.7 kPa (-20 mmHg), for 5 seconds Increase more than 0.24 kPa (1.8 mmHg)