DTC P0441 [LF]: Notes
DTC P0441 (LF) DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0441 |
EVAP system incorrect purge flow |
| DETECTION CONDITION |
- The PCM measures the purge line pressure, which is the vacuum when a following condition. If vacuum between charcoal canister and intake manifold does not reach the specified, the PCM determines that the EVAP system has clogging.
MONITORING CONDITIONS
- Engine speed: 1,500-3,500 RPM
- Throttle opening angle: 11-20%
- Vehicle speed: 69.5-136 km/h {43.2-84.5 mph} [MT]/34.5-136 km/h {21.4-84.5 mph} [AT]
Diagnostic support note
- This is an intermittent monitor (EVAP system).
- The MIL illuminates if the PCM detects above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
- PENDING CODE is available if the PCM detects the above malfunction condition during the first drive cycle.
- FREEZE FRAME DATA (Mode 2/Mode 12) is available.
- The DTC is stored in the PCM memory.
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| POSSIBLE CAUSE |
- Purge solenoid valve malfunction
- Blockage in EVAP system
- EVAP hose damaged or loose
- EVAP pipe damaged
- Catch tank malfunction
- Charcoal canister malfunction
- Leakage in EVAP system
- EVAP system leak detection pump malfunction
- PCM malfunction
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