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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 127 (Diagnostic Trouble Code (DTC) Detecting Criteria (H4DO)) >> Diagnostic Trouble Code (DTC) Detecting Criteria >> DTC P0451 Evaporative Emission System Pressure Sensor/Switch Range/Performance >> Diagnostic Method

Diagnostic Method

WARNING: This page is about a different car, the 2012 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
| ELCM pressure sensor output value - intake manifold pressure (absolute pressure) when ignition switch is ON | > 4.226 kPa (31.7 mmHg, 1.25 inHg)

Time Needed for Diagnosis:  328 ms

Malfunction Indicator Light Illumination:  Illuminates when malfunction occurs in 2 continuous driving cycles.

JUDGMENT VALUE REFERENCE CHART

Malfunction Criteria Threshold Value
| ELCM pressure sensor output value - intake manifold pressure (absolute pressure) when ignition switch is ON | ≤ 4.226 kPa (31.7 mmHg, 1.25 inHg)

Time Needed for Diagnosis:  262 ms