Hi, my fabia has had 2 codes for a while now:
17549-load calculation cross check: Implausible value P1141-35-00
16556-Fuel Trim: System too rich: Bank1 P0172-35-10
The fuel trim code is sometimes there, sometimes not.
The load calculation code is basically permanent even after a head gasket replacement. Some rubber vaccum hoses have surfrace cracks on them but I think that isn't the cause.
I tried running the lambda probe before catalyst test, the test started fine but the catalyst temperature was something like - 32°C Before the test the car was driven 20km in 10°C weather. So there is no possibility of it having really - 32°C.
Tried running this test in the summer, fall, winter, spring multiple times last year but there was - 32°C every time. The test started, It held the rpms up, the temperature didn't change and the test never ended so I gave up. One of the test conditions is to have the catalyst temperature at least at 400°C. In my case the temperature never came close to 3 digit numbers. The Idle is sometimes rough but only a little bit. If I remember right the lambda value was in impossible numbers too. This might be connected with my other issue with exhaust fumes entering the cabin, I explained it in my other thread.
Thanks in advance for any help.