hi everyone , had this problem on my l322 for while my eml light gets triggered and the fault reads as follows

lamda adaption lower limit exeded bank 1 and 2

i have replaced both front sensors as the fault used to read

o2 sensor fault upstream bank 1 -

lamda adaption lower limit exeded bank 1 and 2

now the first part of the fault has now gone i am left with the other
as well as these faults the other fault along with them reads
electric thermostat fault
which i do have ready to replace - anyone think they may be conected ? maybe if i replace the thermostat it may solve it
its 1 of those jobs i havent got around to