P0448
Low SeverityEVAP Vent Control Circuit Shorted
EVAP System
What Does P0448 Mean?
Short circuit in the vent valve.
Common Fix
Replace vent valve
Estimated Cost (DIY)
$20 - $60
Symptoms
- β οΈCheck engine light
Common Causes
Shorted valvelikely
Wiring shortpossible
How to Diagnose P0448
- 1Check wiring
- 2Replace valve
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Shop OBD2 Scanners on Amazon βFrequently Asked Questions
- What happens if the vent valve is stuck closed?
- The fuel tank cannot breathe properly, potentially causing pressure buildup or vacuum in the tank.
- Can a vent valve cause hard fueling?
- Yes β if the vent valve is stuck, the tank builds pressure, and the fuel pump nozzle clicks off repeatedly at the gas station.
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