check engine message when coming to a stop

[rusty88]

Has anyone had this before?

Since I bought my cv8 last year I've had the check engine message presenting itself intermittently which turned out to be both banks running lean.
I replaced mad sensor for a second hand one and spark plugs/leads all about a month ago and I didn't see the message again for a few weeks.

Now I only seem to get the check engine message on the odd occasion when I am coming to a stop in traffic etc usually when the engine is warmed up. It clears itself eventually.

I don't have a code reader that will pick this up so before I go hunting round for someone with a compatible code reader does anyone have any ideas?

[ARAF]

Where in the country are you? Code readers are really cheap now, so many forum members have them.

Without knowing the code, it could be half a dozen problems, so why spend money on a hunch before you know?

[rusty88]

I'm in Halifax, West Yorkshire.
I've already tried and failed with 3 or 4 cheapo code readers that have been recommended by other owners.

[rusty88]

Maf sensor was only 25 quid and the spark plugs/ leads were replaced for its recent service.