Low Power No Boost

[Graham68]

Hi guys new to the galaxy just bought a mk3 2007 2.0tdci ghia when driving there is no power at all it takes a lifetime to get to 70mph on motorways. ive had the engine managment light come on it said code p0299 low boost on turbo thing,is it the maf sensor ive checked all hoses the are all secure and no holes ive tried the unplug the maf sensor while engine running and tge car makes no change does this mean its knackered

[BrianH]

best way to tell if the sensor is working is to look at live data - Not sure of the best way of doing that on the mk3, I've used Torque on an android phone and a bluetooth dongle. Though with that its hard to tell a good sensor from bad if its working but not reading as high as it should do.

 

The MAF isn't likely to be the cause - its the turbo not working for some reason, example reasons for the code (not an exact match for yours) can be seen here

 

http://wiki.ross-tech.com/wiki/index.php/16683/P0299/000665

 

The only thing I can think of on the air intake side would be a clogged up air filter - which would be easy to check at least.

 

The maf making no change suggests its probably fine (if it improved then it might be misreading, but it will default to a basic map without it being connected - it should also have a code logged for the maf sensor not working having been disconnected now).