fault codes

[opel]

coming home from work 2night car was going lovely intill i sat waiting at a train crossing and the engine management light come on. ive just scanned it and it came up with

p1297  Pressure Drop between Turbo and Throttle Valve

p1137 Fuel Trim: Bank 1 (Add): System too Rich

were do i start as im off away soon and need my car

[richw911]

Boost leak check the whole system carefully, especially the pancake pipe and recirculating valve 

[opel]

ill have to have a look this weekend

[richw911]

ill have to have a look this weekend

Have you ever cleaned the throttle body? If not well worth doing first 

[opel]

no mate not since i brought it i just been working my way though it getting cambelt and waterpump done and other the little bits. ill have to do it