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Home >> Land Rover >> 2022 >> Defender 90 S >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 4 (Electronic Engine Controls - INGENIUM I6 3.0L Petrol -- Defender/L663) >> Electronic Engine Controls - INGENIUM I6 3.0L Petrol >> Diagnosis And Testing >> Electronic Engine Controls - INGENIUM I6 3.0L Petrol (G3139674) >> Inspection And Verification >> Ho2S Activation Requirements

Ho2S Activation Requirements

WARNING: This page is about a different variant/trim than selected.
NOTE: If the sensor has not become active, then DTC  will not be set.

The drive cycle required to activate all of the HO2S  can vary greatly in time. This is dependent on all of the sensors reaching 'dew point' during previous drive cycles. 'Dew point' is where the moisture content in the exhaust has evaporated and can no longer damage the HO2S  . The closer a HO2S  is to the engine, the faster it will achieve 'dew point'. When a HO2S  has reached 'dew point' the HO2S  heating is activated and shortly afterwards the HO2S  will be functional. When functional the Heated Oxygen Sensor diagnostics become active and can report any error states with a Diagnostic Trouble Code. 

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