P1448 NISSAN Possible Causes
- EVAP canister vent control valve
- EVAP canister is saturated with water
- EVAP control system pressure sensor and the circuit
- Blocked rubber tube to EVAP canister vent control valve
- Water separator
First diagnose P1448 NISSAN code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
P1448 NISSAN Tech NotesStart by checking for damage EVAP canister or hoses. If no hoses are damage the EVAP canister vent control valve may have to be replaced.
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Cost of diagnosing the P1448 NISSAN code
Labor: 1.0The cost of diagnosing the P1448 NISSAN 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 P1448 NISSAN code detected?EVAP canister vent control valve remains open under specified driving conditions.
P1448 NISSAN Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1448 NISSAN MeaningThe EVAP canister vent control valve is located on the EVAP canister and is used to seal the canister vent.
This solenoid 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 components.
This 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.
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