DTC P0448: EVAP System Vent Control - Vent Control Circuit Shorted: Condition
WARNING: This page is about a different car, the 2002 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
DTC sets when EVAP Canister Vent Valve (EVAP-CVV) output voltage is high while ECM commands EVAP-CVV to close. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- EVAP-CVV malfunction.
- EVAP-CVV circuit malfunction.
- ECM malfunction.