During past couple of days I have been getting ENGINE SYSTEM FAULT message on start up. No change in performance. Battery reading 12.2v.

Checked codes today and got:

P138E - turbocharger boost control position sensor A - minimum/maximum stop performance

P132B - turbo/supercharger boost control A performance

Cleared codes with iCarsoft reader, restarted engine and reader confirmed no DTCs found, I have had no more ENGINE SYSTEM FAULT messages so far.

I also checked :

- Boost pressure actuator banks 1 and 2 and got readings of around 0.82% going down to around 0.70% with light revving.
- Commanded boost actuator control banks 1 and 2 with readings of around 82% going down to around 70% with light revving.

Can anybody confirm what the issue is?

Thanks in advance…..

I'd be checking the turbo actuators to make sure they're free.

Dunc. The life you have is the only one you'll get; make the most of it.
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2012 4.4 TDV8 L322 Autobiography
2003 TD5 Oslo Blue D2 ES Premium Auto (with mods!)

Thanks Dunc.

Do the Boost pressure and Commanded boost readings not confirm that the actuators are moving?

They do but they may not be moving freely.

I'd also, as a matter of course, check the hoses and associated trunking.

Dunc. The life you have is the only one you'll get; make the most of it.
--------‐--‐-----------------‐------------------‐---------------------------------------------------
2012 4.4 TDV8 L322 Autobiography
2003 TD5 Oslo Blue D2 ES Premium Auto (with mods!)

Thanks again Dunc