Question about Nissan Frontier
P0446: Evaporative Emission System Vent Control Circuit problem
1. Faulty sensor
2. Damaged or corroded connector terminal
3. Wire harness. Check for correct voltage, open, short to ground, short to voltage
4. Control unit software may require updating
5. Vacuum leaks, damaged hoses, or incorrect routing
6. EVAP system components, i.e., fuel filler cap, canister, valves or other components may be at fault
Posted on Dec 05, 2016
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Posted on Jan 02, 2017
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