Check Engine Light On Volvo S80 Turbo

first: you better have the car checked by the OBD-diagnostic tool at a Volvo dealer. -this shows the error codes of the engine etc.
Normally a good mechanic does that BEFORE any replacement of a possible faulty component....!
there is also a small chance that your "check engine" light is wrong and needs to be reset.

p0161 is o2 sensor heater circuit malfunction(bank 2 sensor 2) p1132 is manufacturer control fuel air meter. Hope it helps a little. I have a 99 V70xc AWD I know they can be.

Some computers have to be reset more than once for some reason and most of the scanners are equipped with this function.

the boost preasure sensor is located on rear of the cooling fan housing at rear of engine near air box, theres a turbo control valve and its located on the top of the engine in the back near air box, you can say its behind the driverside head light in engine compartment. hope this helps.

The Volvo S80 did not come with a cummins engine

0237 is turbo/ super boost sensor a circuit malfunction
0236 is turbo/ super boost sensor a ckt range performance

The P1132 I believe is a bad mass flow sensor or a vaccum leak

uplug air metering sensor car should run almost normal but will set check eng, light

Try looking at the idle/air control valve - Look around where the gas cables attach to the engine. remove the wires and then unbolt the unit from the engine. The control valve has a spring valve that you can clean with intake cleaner. re-install the valve and drive to warm up the vehicle. After 20 minutes the vehicle should Idle. If not clear all codes and relist them here - hope tthis helps

Bad intake gasket will cause this