Attention turbo specialists/people in the know:
Got a A3 8p 1.2 TFSI in at the moment...one of the wee supercharged/turbocharged things.
Its driving flat as a pancake...no boost at all. Logging a single fault:
11417 - Boost Pressure Regulation
P155A 00  - Lower Limit...
Got an interesting one on an 2013 8V.
DIS displays "Engine start system: system fault" upon engine start
Symptom - engine doesn't stop with key off (position 0), only when key pulled.
Didn't have time to look at it today...Know its likely T15 relay failing to break...j329 behind...
This may be of interest to some of you guys, to get some insight as to what's actually happening when a DV goes bad and exactly what this does to your boost.
This example is taken from an Audi A3 2.0 TDI 8P3 (stock map) we had in today displaying a classic under-boost fault.
When a car comes...
I'm a Professional light vehicle Diagnostic Technician & IMI-Accredited Advanced Automotive Engineer (AAE) at Glasgow-based Independent, M B Jarvie Ltd. I operate daily at the sharp end of modern vehicle fault-finding, I’m fully Bosch-trained and an expert in all areas of light...