Just had the mechanincs at work plug their Tech2 in to see what the stored codes were that have been on this car since I picked it up last weekend. Found 6 old codes, luckily none active, just wondered if anyone could suggest a cause for them?

Haven't got the code numbers themselves, but....

Intake cam sensor bank 1
Intake cam sensor bank 2
Alarm system no communication with siren
Passenger door loudspeaker short circuit

and 2 that were to do with the stereo/sat nav.

They all cleared without any issues, which is the main thing. The alarm one is quite common apparently, and whatever problem there was with the speaker, it works fine now. The cam sensor codes got me thinkng though... any ideas?