| 摘要 |
The invention relates to a method for the diagnosis of an exhaust gas oxygen sensor during operation. Said method includes subjecting the exhaust gas oxygen sensor to a pump current pulse (21) additive to a pump current (2) and to a pump current counter-pulse (22) additive to said pump current (2), and detecting a malfunction of the exhaust gas oxygen sensor from electric voltages measures at a pump cell and/or at a Nernst cell of the exhaust gas oxygen sensor during application of the pulses (21, 22). |
