Following a P1458 cel code, I'm using vagcom measuring blocks 112, 220, 221 (as per Bentley manual instructions) to test the EGTs. It's noted that exhaust gas temperature needs to be +945c and greater than 5000rpms for things before any values will be measurable. Well I must have done gears 1-3 to the red 3 times after the car had warmed up but still no change to the default temp value of 945c.. So am i to assume the EGTs are dead, surely exhaust gases wld be hot enough to register if they where working ? I also have P1113 and 1131 (O2 sensors).. need to test these but car passed MOT with flying colours.. Lambda = 1.0.. I also did a MAF test as know this is an issue on these cars but values seem spot on according to the research i have done. Ie test 22 peak mass air flow g/s is 0.87 of full power and test 32.. -0.8% so well within the +/-10%. Car feels fins to be fair, perhaps just a little thirsty but runs smooth and pulls hard..