Inherited above car from another garage with this fault code, previous garage fitted new o2 sensor, 100miles later light back on
symtoms so far; car at running temp emmisions perfect o2 sensor switching nicely, after approx 60 seconds of every start up o2 sensor flat lines to 0v & injector duration increases to 6ms ,cant see exactly which occurs first!, co% through the roof, oxygen level good at .075%,cannot detect air leak on inlet side, all other parameters i can see using eobd seem fine,
sadly unable to access fuel pressure, also very limited for any other data
whilst car is running good STFT -10% LTFT 23%
after it drops out STFT & LTFT are both 32%
Bit stuck on this any help would be appreciated keith ps sorry about the long post