DTC P0452: - Evaporative Emission System Pressure Sensor/Switch Low
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2009 Mercury Mountaineer, 2009 Mercury Milan, 2009 Mercury Mariner, 2009 Mercury Grand Marquis, and 2009 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: |
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| Diagnostic Aids: | An FTP voltage parameter identification (PID) reading less than 0.22 volt with the ignition on, engine off or ignition 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 . | ||