Po299 fault with Oil Pressure warning ???

soldier4313

A4 Avant B9 2.0 Tdi
Joined
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Today while driving my car started flashing up Oil Pressure and then went into limp mode, on a quick scan it flagged up

“Turbocharger/Supercharger “A” underboost condition”

It also makes a weird clicking noise while running like the sound of a solenoid/relay.

I’ve added a few pics, it’s been 150,000 of nearly fault free driving but this has got me… I have no idea?

Can anyone help?
 

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is the oil light or eml light on the dash? are you loosing oil? could be a leak or worse could be the hex drive in the oil pump has gone.
 

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