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Bentayga V8 Kovomo - Engine MIL light on - DTC O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2. Customer statement / workshop findings: DTC P004100: O2 Sensor Signals Swapped Bank 1 Sensor 2/ Bank 2 Sensor 2 is evident within address 0001 (Engine control unit) and MIL light active after attempting to conduct a readiness test Technical background: In the event the symptom(s) described are evident the operative should carry out the instructions within the Measure section Measure: VERY IMPORTANT: Check and confirm that no DTCs are evident Or No engine operation issues are evident - Save an online log to confirm that no DTCs were logged at this stage of the procedure