My car is an E46 bmw 318i se DEC 2001 born date.
It has the N42 2litre engine and done 114k miles.
Recently the check engine yellow lihght came on while driving on the motorway.
I used an AUTEL maxiscan MS 309 reader to read the fault codes -it came up with the generic P0420 code-which means "catalyst system efficiency below threshold bank 1".
In the Freeze- Frame section of diagnosis -it came up with the following-
FUEL system 1-CL,
Can anyone help with interpretation of FREEZE /FRAME DATA?
I hve erased the codes and reset the check engine light successfully.