I recently had this fault to find it was my abs ring that was goosed, so i replaced it and then a day later the other side had snapped aswell, so i replaced that too although i had the abs light on aswell as my service light, once changed i could then use my esp but my lights had never gone out as soon as i plugged a mac code reader in it all was fettled and the lights still havent come on around a month later so try that ? maybe just a fault code thats still in the car that needs clearing other than that are you sure youve plugged everything in on the rebuild ?