I saw this code in OBD2 scanner on Skoda Fabia 1.2 2006 64hk petrol.
It doesn't matter to me except that the car failed the inspection and I'm not allowed to drive it any more.
The problem was too high CO value. They said the other greenhouse gases and lambda value where OK!
Now I guess I can say the sensors are fine (they're recording) and the catalyst is doing its job.
HC and NOx values are within range.
CO was 0.0 last year, now it is 0.4, while the limit is 0.2
Lambda value is 0.99 where 1 is perfect and limits are 0.97-1.03. 0.99 means a bit rich fuel mixture.
Spark timing advance (TA) is around 26 (is that normal?)
Intake manifold pressure (MAP) average 55 (min-max 22-100)
Oil, oil filter, air filter are recently replaced. Spark plugs are replaced but I doubt that I installed ones with smaller gap.
The car specs says 0.9mm gap, and I installed 0.7mm. Can that be an issue?
I can't put my finger on whats wrong. I added K-sprit to the fuel, it is sort of injection engine cleaner and will take to inspection again this week.
What else can affect CO value? the fuel consumption is slightly higher than usual, but not a great deal.
No other error codes and no lamps are lit.