DTC P0442 EVAP. Emission System-Leak Detected (Small Leak): DTC Detecting Condition
DTC DETECTING CONDITION CHART
| Item |
Detecting Condition |
Possible Cause |
| DTC Strategy |
- Monitoring Fuel Tank Pressure Trend after generating underpressure in Tank
|
- Fuel filler cap damage or missing
- Faulty or damaged fuel filler pipe
- Leaking, disconnected or plugged fuel vapor lines
- CCV
- PCSV
- Canister
- Faulty Fuel Tank Pressure Sensor (FTPS)
- Fuel in lines due to faulty Rollover Valve
- On-Board Refueling Vapor Recovery Valve (ORVR valve) or stuck closed CCV
|
| Enable Conditions |
- Coolant temperature >74°C (165°F)
- Ambient air temperature model >-10°C (14°F)
- Vehicle speed < 10km/h (6mph)
- Time after start > 590 sec.
- Limited Canister saturation
- Estimated altitude < 2.4km (8000ft)
- Canister load < 1
- Minimum canister purge time: 3~25sec.
- -1700 Pa < Differential fuel tank Pressure < 400 Pa
- Idle speed engine operating state
- No relevant failure
- 11V < Battery voltage < 16V
|
| Threshold Value |
- Leak diameter > 0.8mm (0.03in)
|
| Diagnostic Time |
- 30 sec. In idle when all enable conditions fulfilled
|
| MIL On Condition |
|