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AutoCodes - Generic - P1448

P1448 Code - EVAP Canister Vent Control Valve Open

- Code Popularity: 42,165 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P1448?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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
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How to Fix the DTC P1448?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1448 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1448 Description

The 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.

OBDII Code P1448 - EVAP Canister Vent Control Valve Open - AutoCodes.com
P1448 Code - EVAP Canister Vent Control Valve Open

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