P0448 2006 NISSAN ALTIMA SEDAN - Evaporative Emission Control System Vent Control Circuit Close
P0448 2006 Nissan Altima Sedan Possible Causes
- Faulty canister vent control valve
- Blocked rubber tube to EVAP canister vent control valve
- Purge Control Valve harness is open or shorted
- Purge Control Valve electrical circuit poor connection
P0448 2006 Nissan Altima Sedan Tech NotesVery common problem with Nissan vehicles. Before replacing any parts, check for damage EVAP canister and for loose hoses from the vent control valve to the canister.
Cost of diagnosing the P0448 2006 Nissan Altima Sedan code
Labor: 1.0The cost of diagnosing the P0448 2006 Nissan Altima Sedan code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected?EVAP canister vent control valve remains closed under specified driving conditions.
P0448 2006 Nissan Altima Sedan Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0448 2006 Nissan Altima Sedan MeaningThe Evaporative Emission System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. This solenoid (the EVAP canister vent control valve) responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized.
A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system componentsThis solenoid valve is used only for diagnosis, and usually remains opened. When the vent is closed, under normal purge conditions, the evaporative emission control system is depressurized and allows EVAP Control System (Small Leak) diagnosis.