P1486

Tests 1 - 2:

Test 3:

Tests 4 - 5:

Test 6:

Test 7:

SYMPTOM
P1486 - EVAP LEAK MON PINCHED HOSE FOUND

WHEN MONITORED
Immediately after a cold start, with ambient temperature between 40 °F and 90 °F and coolant temperature within 10 °F of ambient temperature. If the PCM suspects a pinched hose, it will not set a fault until it runs the EVAP purge flow monitor.

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