P0441 EVAP Purge Flow Monitor Failure

SYMPTOM
P-0441 EVAP PURGE FLOW MONITOR FAILURE

WHEN MONITORED
With engine temperature greater than 170 degrees F, engine in closed loop, engine idling for 2 minutes, no low fuel, vacuum greater than 9.7 inches mercury, and barometric altitude less than 8,000 feet.

SET CONDITION
With LDP: must pass stricter evap system test first. No air flow through the evaporative system is detected by the evap monitor.

POSSIBLE CAUSES
- Purge canister line damaged
- Purge solenoid and canister defective
- Purge solenoid defective
- Vacuum hoses damaged or plugged
- EVAP purge monitor failure does not reoccur