We were recently asked to run some diagnostic testing on a vehicle that had been to two other workshops before it came to us. The symptoms reported by the customer were that of a complete engine power shut down when driven under load accompanied by a complete loss of throttle response with faults being logged in the engine relating to MAF and boost. The vehicle in question was a 2014 VW T5 Transporter with a bi-turbo CAAA engine running the Bosch EDC17 system that meets Euro