Diagnosis Conditions

Fig 1: DTC P0140 Diagnosis Conditions

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The DME control module stores DTC P0140 when the sensor voltage is continuously between 400 mV and 500 mV for more than 400 seconds.

Fig 2: DTC P0140 Fault Conditions

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NOTE: If DTC P1117 (oxygen sensor heating) is stored in the memory, correct this fault first and then check whether DTC P0140 is stored again.

Diagnosis can be performed with the Porsche System Tester 2 in the Short Test menu.