I bought my X reg K11 just after christmas 2011 from a car dealer for £800 with a 28 day warranty. After running it for a week the engine warning light came on, so I took it back, they did a diagnostic check, said they would fix it, they did. After running the car for another week the engine warning light came on again, so back to the dealer it went, this time they said a new part was required on the exhaust which they replaced, no probs. The engine warning light came on again the other day 25th Feb,the warranty had expired from the dealer so i took the car to my local garage, he did a diagnostic check, charged £36 and said if the light came on again he would have to investigate further. The report from the diagnostic check shows - BANK 1 LEAN (suspect ignition problem), the car runs fine at the moment, does anybody know what the diagnosis means. I am dreading the light coming again as it could be quite costly. Any help/advise would be appreciated.