Engines / Petrol / 2.0/110kW FSI AXW / Test - heating of Nox sensors

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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:
- appliances = OFF
- on-board voltage > XXV
- engine speed = idling

connect with the control unit XX - engine

XX - Measured values group XXX

observe values - field X - X minutes

required values
field X = OFF / ON

if continuously displayed - OFF - check component:
- fuse Nox sensors (SBXX)
- Nox sensors - power supply

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