P1486 EVAP Leak Monitor Pinched Hose Found

SYMPTOM
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND

WHEN MONITORED
Ambient temperature between 40 and 90 degrees F, and coolant w/in 10 degrees F of ambient. If PCM suspects pinch, won't fault until runs evap purge flow mon. Purge flow monitored with engine temperature > 170 degrees F, engine in closed loop, idle for 2 mm, no low fuel, MAP < 15.7 in. merc, & baro alt < 8000 ft.

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

POSSIBLE CAUSES
- Fuel tank to EVAP canister hose pinched
- LDP pressure hose blockage
- Purge solenoid to EVAP canister hose pinched
- Leak detection pump blockage
- Evaporative canister blockage LDP side
- Evaporative canister blockage solenoid side
- EVAP leak monitor pinched hose does not reoccur