Es muss ja nicht unbedingt der Kat sein. Gerade letzte Woche noch im Bimmerboard gelesen, da hat einer schlechte Werte gehabt, einige Male hingefahren.
Stellte sich heraus, dass die Lambdasonde nicht richtig eingeschraubt war
Zitat:
last posted my effort to find out why the 95 525 consistently failed the New Jersey emissions test before my month long business trip out of the country in January. While traveling I asked my younger son to bring the car to the inspections facility again. It failed again.
Yesterday I measured the voltage between pin 13 and 40 on the DME connection again. It was the same 0.448 volt, indicating the O2 sensor was not connected and is in the fall back voltage. I raised the car to climb under the engine to see what was going on. The O2 sensor socket is screwed on to a sheet metal ring with a tab on the inside. The purpose of the tab is to lock the socket by a plastic threaded ring attached to the socket. If the socket is not seated correctly, when you connect the O2 sensor connector you will keep turning the socket as you screw on the connector. This is why all the time the car was going through the emissions gauntlet without the O2 sensor connected, thus the high emissions reading. Once the connection is seated the voltage reading between pin 13 and 40 on the DME fluctuates in response to throttle as it should.
So this morning I got the inspection sticker finally after almost a year.
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