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Home >> Ford >> 2006 >> Focus ZX5 SE, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 974 (Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid)) >> DTC Diagnosis >> P0452 - Evaporative Emission System Pressure Sensor/Switch Low

P0452 - Evaporative Emission System Pressure Sensor/Switch Low

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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: 
  • Contamination internal to the FTP sensor connector
  • FTP circuit short to GND or SIG RTN
  • Damaged FTP sensor
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   refer to PINPOINT TEST HX .
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