Trying to analyse a possible lambda error or vacuum leak and live fuel trim data for both long and short tern fuel trim would be very useful.
Car is 1.4MA 135 Mito.

My son's 1.4 MA failed the MOT on high Lambda. Readings were:- CO = 0.02 HC = 5 Lambda fluctuating slightly starting at 2.32 and slowly coming down to 1.179. The machine did not give an NOx or Oxygen reading. EML not illuminated. MES did not show any stored codes. MES would not give any reading for ...

Well after having an ELM 327 lead for nearly 4 years and never trying to connect to CANbus I failed miserably tonight. Because it had always connected to engine ECU (Alfa 159 2007) I always thought that it was a good lead. Having read the threads it looks like I have the type shown on P11; very, ver...