Engines / Petrol / ME 7.1.1 general / Test - Lambda-sensor upstream of catalyst - dynamics

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Mark	Model	Control unit	Diagnostic operation

Mark

Select a vehicle make or a common group such as Service Intervals, Engines, Transmissions, Immobilizers and Independent Heaters.

Model

Control unit Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Select the desired control unit as accurately as possible. The UDS identifier EV_xyz can be found in the VCDS after connecting to the control unit and then in the Extended Identification.

Diagnostic operation Select the desired diagnostic procedure.

Diagnostic procedure

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Conditions:
- engine speed = idling
- engine temperature > XX °C
- catalyst temperature >= XXX °C (XX - Measured values group XXX field X)

XX - Basic settings group XXX
activate default settings

fully depress - brake pedal + accelerator pedal

required values
field X = TEST ON

wait

required values
field X = X.X - X.X (dynamics)
field X = BX-SX OK

release - brake pedal + accelerator pedal

upon non--achievement of condition:
- do a test drive
- repeate this test
- Lambda-sensor downstream of catalyst - replace

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