DTC P0452: EVAP Control System Pressure Sensor, Low Input: Condition
WARNING: This page is about a different car, the 2002 Mazda Protege5 and 2002 Mazda Protege. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when engine coolant temperature is less than 176°F (80°C) and fuel tank pressure sensor input is less than .2 volt. This is a continuous monitor. MIL is illuminated when PCM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- Fuel Tank Pressure (FTP) sensor malfunction.
- Open or short circuit between FTP sensor and PCM.
- PCM malfunction.