DTC P0452: EVAP Control System Pressure Sensor Low Input Or DTC P0453: EVAP Control System Pressure Sensor High Input: Description

The EVAP Control System Pressure Sensor (EVAP-CSPS) detects pressure in the purge line. The sensor output voltage to ECM increases as pressure increases. The EVAP-CSPS is not used for engine control. It is only used for on-board diagnosis.