BMW Repair Questions? Ask a Mechanic for Answers ASAP
41F6 oxygen sensor signal virtual ground
41D6 oxygen sensor signal Nernst voltage
4225 oxygen sensor
4S01 Exhaust gas recirculation
you should replace all of your oxygen sensors and check the wiring to each
however, the transmission issue is more likely related to an internal fluid leak or one on the electrical connector
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I have been told its not a mechanical fault as every time the fault codes are cleared it goes perfectly for a while then reverts back to eratic changing of gears
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a leak into the electrical connector is not a mechanical fault and is the only likely cause I can suggest based on provided information.