HI Juss,

Check all the hoses to and from the turbo to the inlet manifold including, the intercooler, for any loose hose's and also for vacuum air leaks, make sure your exhaust is free from any leaks before lambda sensor as will give problems to the lambda sensor to ecu, make sure your sensor's
connections are sound.im not sure with small turbo what fault codes it records weather throttle switch,? as large turbo covers 9 faults, doesent
cover tps.

DAVE R