Engines / Petrol / ME 7.1.1 general / Test - Lambda-sensor upstream of catalyst - cylinder row 1

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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 (XX - Measured values group XXX field X

connect with the control unit XX - engine

XX - Basic settings group XXX
activate default settings

wait

required values - field X
xxXXXXXXX = OK

XXXXXXX = error (lambda sensors changed ??)
XXXXXXX = check of error memory

if values are not achieved - check of error memory

to achieve the values - continue

XX - Basic settings group XXX
activate default settings

press and hold brake pedal + accelerator pedal

the control unit increases the engine speed

required values - engine speed > XXXX rpm

required values - field X
xxxxxXXX = OK

if values are not achieved - check of error memory

upon achievement of values - continue

brake pedal + accelerator pedal = XXX%

engine speed > XXXX rpm

XX - Basic settings group XXX
activate default settings

required values - field X
xxxxxXXX = OK

if values are not achieved - check of error memory

upon achievement of values - end - Lambda sensor(s) = OK

release - brake pedal + accelerator pedal

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