I am experiencing the P0243 code with obvious turbo disfunction. Car has 218,000 miles it just went thru the shop for Timing chain (preventive), glow plugs, and the intake manifold was cleaned. When I got it back I got the SES Light and the PO243 code. I cleared it and found that the vacum line from the EGR valve to the pressure sensor was off at the pressure sensor. I fixed that. It went a week or so. Now I am getting the fault every day. I switched the EGR and Boost Pressure Transducers ... same code. The test procedures now tell me to start checking vacum and voltage (N3/7) test connection.

The Turbo is working at time but I can determine no obvious explanation for when it does or doesn't work.

Any words of wisdom?

Why didn't you take it back and tell them their work caused a problem that didn't exist until they worked on it?

Yes I have called the garage and told them I have gotten the code twice and let them know that it never happened prior to the work they did. But if they trouble shoot it and find a bad swexler valve I will be paying the new bill with labor.

It could be they didn't cause it but I was disappointed to find the one vacuum hose disconnected.

I am getting the vibration sound from both vacum transducers, maybe this is normal. I have read others concern about it.

I am getting 385 mbar at the vacum transducer at idle (>350 spec). But I am getting 370 mbar at 3500 rpm, the spec is <300mbar.

I'm an idiot. When I 'reconnected' the vacum hose to the sensor I must have had poor light or been in a hurry. I connected it to the threads of the one mounting screw (So they looked like barbs)of the pressure sensor. I guess the pressure sensor doesn't perform when it is seeing 14.7 psi constantly!

This has to be the dumbest thing I've done since ... well forget it.

it happens.. you learn some, you lose some...