got an old twin turbo rs6 avant in at work "bcy" engine. cars been stood a few weeks, was running fine before hand. it had a flat battery but wouldnt start on jumping it. engine cranks but wont fire. four fault codes. three fault codes to do with the throttle body, p1545, p1558 and p1579. and one ecu faulty code p1604. no signs of water ingress anywhere inside or in the engine ecu box. weirdly the cooling fans are also running full chat with the ignition on. pulling the 5amp fuse for the fan ecus under the drivers kick panel stops them running tho. on cranking theres no live to the coils and the ecu isnt giving out the switched ground to click in the fuel pump relay. but activating it with the power probe manually on cranking doesnt make it start either. ecu main relay is working and ive checked all lives/earths to the ecu. any ideas guys?