Ongoing tale of stress. Ive seemed to have fixed all of the oil leaks so there is some good news but the Engine yellow light is on. Diagnostic shows two codes. the first one is 279C Control Heater Cooler. This would not produce a light. the second which would cause the light to stay on is 272C adaption Add. Per Time. Any one have any Ideas. Ive trawled google and it is mentioned a few times but no conclusion as to what the fix is. If I clear the code it will stay cleared for a few days and then stay on again. The car runs fine, does 40 mpg on a run and starts first time. I replaced the MAF yesterday with a new Bosche unit.