DTC P0452: Evaporative Emission System Pressure Sensor/Switch Low
WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2010 Mercury Mountaineer, 2010 Mercury Milan, 2010 Mercury Mariner, 2010 Mercury Grand Marquis, and 2010 Lincoln Town Car. However, it is still accessible from the selected car via links, so may be relevant.
DTC P0452: EVAPORATIVE EMISSION SYSTEM PRESSURE SENSOR/SWITCH LOW
| Description: | The powertrain control module (PCM) monitors the evaporative emission (EVAP) control system fuel tank pressure (FTP) sensor input signal to the PCM. The test fails when the signal average drops below a minimum allowable calibrated parameter. | ||
| Possible Causes: |
|
||
| Diagnostic Aids: | An FTP voltage PID reading less than 0.22 volt in key ON, engine OFF or key ON, engine running indicates a concern is present. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HX . | ||