On Board Diagnosis Logic
Under normal conditions (non-closed throttle), sensor output voltage indicates if pressure drop and purge flow are adequate. If not, a malfunction is determined.
DTC DETECTING CONDITION AND POSSIBLE CAUSES CHART
| DTC No. |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
| P0441 0441 |
EVAP control system incorrect purge flow |
- EVAP control system does not operate properly.
- EVAP control system has a leak between intake manifold and EVAP control system pressure sensor.
|
- EVAP canister purge volume control solenoid valve stuck closed
- EVAP control system pressure sensor and the circuit
- Loose, disconnected or improper connection of rubber tube
- Blocked rubber tube
- Cracked EVAP canister
- EVAP canister purge volume control solenoid valve circuit
- Accelerator pedal position sensor
- Blocked purge port
- EVAP canister vent control valve
|