P1486 EVAP Leak Monitor Pinched Hose Found

SYMPTOM
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND

WHEN MONITORED
Ambient temp bet 40 deg & 90 deg F, & coolant within 10 deg F of amb. If PCM suspects pinch, no fault until runs evap purge flow mon. Purge flow monitored w/eng temp >17O deg, engine in closed loop, idle 2 min, 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