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Typical Malfunction Thresholds

  1. P0450: Pressure sensor chattering 
    TYPICAL MALFUNCTION THRESHOLDS

    EVAP pressure Less than 42.11 kPa (316 mmHg), or more than 123.761 kPa (928 mmHg)
  2. P0451: Pressure sensor noise 
    TYPICAL MALFUNCTION THRESHOLDS

    Frequency that EVAP pressure change is 0.3 kPa (2.25 mmHg) or more 10 times or more in 10 seconds
  3. P0451: Pressure sensor stuck 
    TYPICAL MALFUNCTION THRESHOLDS

    EVAP pressure change during reference pressure measurement Less than 0.65 kPa (4.876 mmHg)
  4. P0452: Pressure sensor low voltage 
    TYPICAL MALFUNCTION THRESHOLDS

    EVAP pressure Less than 42.11 kPa (316 mmHg)
  5. P0453: Pressure sensor high voltage 
    TYPICAL MALFUNCTION THRESHOLDS

    EVAP pressure More than 123.761 kPa (928 mmHg)