DTC P0448: EVAP Circuit, Vent Control Circuit Shorted: Condition
WARNING: This page is about a different car, the 2002 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0448 is set when EVAP canister vent valve output signal is too high. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- EVAP canister vent valve malfunction.
- EVAP canister vent valve circuit malfunction.
- ECM (PCM) malfunction.