hello,

can any1 tell me what this vagcom code means; 16806? i was told buy the machanic its something to do with the 'maincat' can some1 explain this in detail? P.s for an audi A3 1.8 2001

thanks

"Main Catalyst,Bank1 Below Threshold"

Basically, the post-cat O2 sensor is seeing more pollutants than it is supposed too. Could be that your catalytic converter is getting clogged or it could also be a bad O2 sensor. Do you have any mods?

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hi,

thanks for that. nope i have no mods