Hi forum 
A couple of days ago I tried to check the knock sensors on my 3B by disconnecting them and then go for a (careful) drive. I did, but when I checked the codes there was no fault code for the knock sensors, not good (It should be a code when the connector is pulled?). But I got a fault code for the lambda sensor, measured the signal and it was ~0V.
Disconnected the lamda and measured directly on it, and then I got from -0,2 to -0,9 V! Negative values!
I checked that I held the DMM measuring probes the right way, still the same values. Anyone here experienced the same? The Lambda is only 5 months old (Bosch item). Will try to get a new on warranty.
A couple of days ago I tried to check the knock sensors on my 3B by disconnecting them and then go for a (careful) drive. I did, but when I checked the codes there was no fault code for the knock sensors, not good (It should be a code when the connector is pulled?). But I got a fault code for the lambda sensor, measured the signal and it was ~0V.
Disconnected the lamda and measured directly on it, and then I got from -0,2 to -0,9 V! Negative values!
I checked that I held the DMM measuring probes the right way, still the same values. Anyone here experienced the same? The Lambda is only 5 months old (Bosch item). Will try to get a new on warranty.
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