DTC P0442 Or DTC P0455: Condition
WARNING: This page is about a different car, the 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0442 is set when fuel tank pressure increases more than specified value, a small leak in EVAP system is detected.
DTC P0455 is set when fuel tank pressure change is less than specified value, a small leak in EVAP system is detected. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- ECM malfunction.
- EVAP canister.
- EVAP canister control valve.
- EVAP control system circuits malfunction.
- EVAP control system vacuum hoses malfunction.
- Fuel level sensor malfunction.
- Fuel tank component malfunction.
- Fuel Tank Pressure (FTP) sensor malfunction.
- Leaking fuel pump assembly seal on fuel tank.
- Missing, loose or malfunctioning fuel filler cap, or leak from cap gasket.