Hi

! have a astra h 1.7dtl drops into limp home when full boost is required permanent fault code p0070 ambient air temp(ignoring for now)
the code that concerns me is p0234 boost press control positive deviation ( low boost)
turbo waste gate free,vac pipes/ solenoid & vac good actuator test gives full boost
ecu seems to only switch solenoid and supply vac to waste gate on over run throttle off ???
car can be driven with Mitty vac on waste gate (vac on)and archive 1.5 bar off boost
any ideas ?
ecu seems to be giving wrong command ?