OBD Guide
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P1448

EVAP Canister Vent Control Valve Open

P1448 is an OBD-II diagnostic trouble code meaning: EVAP Canister Vent Control Valve Open. Common causes: canister ventilation valve malfunction, open or short circuit in valve control circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Increased fuel consumption
  • Smell of gasoline in the fuel tank area
  • Unstable engine idling
  • Dips during acceleration

Causes

  • Canister ventilation valve malfunction
  • Open or short circuit in valve control circuit
  • Poor contact in valve connector
  • Mechanical valve jamming
  • Problems with the engine control unit

How to Fix

  1. Check valve control circuit integrity
  2. Check valve resistance (must meet specification)
  3. Clean or replace the canister ventilation valve
  4. Check the EVAP system for leaks
  5. Reset the error and check if it returns

Related codes

P0440P0441P0442

Error P1448 by Vehicle Brand

BMWJaguarNissanVolkswagen

FAQ

What does the P1448 code mean?

P1448 is an OBD-II diagnostic trouble code that indicates: EVAP Canister Vent Control Valve Open

What causes a P1448 error code?

The most common causes of P1448 include: Canister ventilation valve malfunction; Open or short circuit in valve control circuit; Poor contact in valve connector; Mechanical valve jamming.

How do I fix a P1448 diagnostic trouble code?

To fix P1448: Check valve control circuit integrity. Check valve resistance (must meet specification). Clean or replace the canister ventilation valve. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1448?

Yes, but get it checked soon

How much does it cost to fix P1448?

The estimated repair cost for P1448 is $17–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat