Patent ID: 11940350
Assignee: ROBERT BOSCH GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC G  F  Y | IPC F  G

Claim 0:
1. A method for diagnosing at least one exhaust gas sensor (22;24;26) of an internal combustion engine (10), the at least one exhaust gas sensor (22;24;26) disposed in an exhaust duct (21), the method comprising:
introducing ambient air (12) into the exhaust duct (21) by means of a device (27), when an operating state is present in which the internal combustion engine (10) does not produce an exhaust gas mass flow, and
subsequently diagnosing, via an electronic control device, the at least one exhaust gas sensor (22;24;26) disposed in the exhaust duct (21).