P1486 EVAP Leak Monitor Pinched Hose Found

SYMPTOM
P-1486 EVAP LEAK MONITOR PINCHED HOSE FOUND

WHEN MONITORED
After cold start w/ambient 40-90 deg F, coolant 10 deg F of ambient. If PCM suspects pinched hose, fault not set until runs evap purge flow monitor and if not pass, pinched hose fault set. Engine > 170 F, closed loop, idle 2 min, no low fuel, MAP < 15.7"HG, bar alt < 8000ft.

SET CONDITION
See DRB III. 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