Hello,

I have a Volvo V50 2008 D4204T which probably has some sort of sensor/electrical problem with code 2263 "Turbo control faulty signal".

Randomly while revving at exactly 2300 - 3000, the revs become very unstable and jerky. This happens, let's say, every other time I climb up to the range from idle. When it is not unstable, it is perfectly smooth without any signs of problems. The car doesn't even need to be restarted for the problem to occur or not. This makes me think that something electric is messing with the ECU. Vacuum leak for example could probably be excluded since the problem is not consistent.

On my diagnostics tool I can see the MAP sensor also reacting to it by spiking up and down, compared to when it's running smoothly.

The vacuum hoses going to the throttles in the intake manifold are connected. (I have seen people getting the code by the right hose popping off from oil leak)

I recently replaced the pressure differential sensor for the DPF since I also had the codes 2454, 2456, 2452 and 2002. All off these complain about bad signal to the pressure sensor. The hoses for the sensor were good, and I have yet to get the codes back after replacing the sensor.

I would really appreciate any kind of advice! Please ask if you need any more information.
Thanks in advance!