06 astra vxr no boost

[anthonymull]

Morning everyone ..
Basically I have an intermittent engine fault on my astra vxr ..over the past couple of days an engine service light keeps popping up and while it's on I have no boost and the car feels really flat .. then it goes and performance is normal ...I just wondered if anyone had experienced the same issue and could shed some light on the problem so I have some idea before I take it to a garage and get screwed haha

[Pyrolysis]

Sounds like its going into "limp mode". Could be a variety of things, possibly o2 sensors or something!

[Pyrolysis]

If you know anyone with a fault code reader then get it scanned for codes so you get an idea what the problem is before the garage screws you over

[anthonymull]

Had the car one the diagnostic machine today and its said there is a boost pressure sensor fault .. the lad deleted the fault and it sorted the problem temporarily but a few hours later the issue reacured so I am a bit confused to weather the boost pressure sensor is the actual fault because if there was a problem with it how would deleting the fault fix it if I am making any sense here haha

[adingley84]

FYI on all Astra H you can pull up any outstanding codes yourself using the pedal test.

1. Get in car
2. Depress brake and accelerator at same time + turn ignition key to 2nd point
3. Any fault codes will cycle through where the odo normally displays

Unfortunately you can't clear them ypurself

[Andy_vx]

If the fault was cleared and it came back there's obviously an underlying problem.

First thing to do is check all the pipework. I had a similar fault and it was the hose from the C/C or intercooler in your case had come off.

If all pipework looks ok then try a new boost pressure sensor.

HTH.

[Camerinray1999]

Hi did you manage to fix this issue as my service light has come on and it won’t boost at all