I know this is XC90 forum, but there is no XC60 forum, and it is the same engine...
Recently, I was playing with my Launch diag (looking for some updates for Volvo) and I found a pending DTC:
LECM-P042000: Catalyst System Efficiency Below Threshold (Bank 1)
The code got away on itself, and I believe the initial reason for the code is that I used some injection cleaning additive during the longer drive on the previous tank.
However, a few days after that (new fuel tank, without additive), I went through live data and got some misfires on all cylinders (photo attached). Spark plugs and ignition coils are new (replaced maybe 2000km ago- OEM)
Are some misfires normal on this engine, or should I be worried? The cat shows normal readings on upstream and downstream sensors (~0.2V difference). I don't even know where to start if misfires should be 0.
Dealers around here are pretty bad so I would like to avoid them...