This is a 2006 S40 T5. Wasn't sure if I should post here or in the S40/V40 where I've posted before on my 2003 V40.

Just purchased the car car at auction and knew it would need some work. Of course, it needs a lot more than I expected.

When I first got the car it had a P0089 error code. This morning I checked and there are three more codes: P0193, P2178 and P0170.

I went to Rockauto.com and bought a fuel filter and of course it is not a correct part. Waste of money.

I then started looking for a real fuel filter and I see that in the parts manual there appears to be one external to the tank and also one in the tank. Do US spec cars have an external fuel filter? This car entered the US via Puerto Rico, so I don't know if it is truely a US spec car or not. I can not find the external filter - where would it be if it had one.

When I look at the parts list for the filter in the tank, I see the pump but I don't see a filter listed in my parts listing. Without a part number, how would I replace it? Would it come on a new pump.

Is there a pressure regulator? I haven't been able to find one listed.

So I know this is a bunch of questions, but I am confused on just how many and the locations of the fuel filters and if it is in the tank how do I order one. And what is the part number for the fuel reglator if there is one.

If you find torx are stripping too easy then I'd look at the bit, the slightest slop will strip out.
If you can get at it you can just cut a slot for a regular screwdriver.
Dremel with carbide cutoff disk if you have one.

I used my Dremmel and cut a slot in the screw and used a punch to rotate the screw until I got it out. I replaced the pressure sensor and now the check engine light is off. Thanks everyone for your assistance.

There is a fuel pressure sensor, it's on the fuel rail. Expensive, but easy to replace. It would be nice to know what your fuel pressure reading is with the engine at idle.

From what I understand, if you have a plastic gas tank there is no filter. If there is a filter, it will be in the left rear wheel arch. But I doubt that is your problem.

The other codes may be related, or air leaking into the intake manifold to really screw things up.

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Keeping it running is better than buying new

I had already ordered a new pressure sensor so I should have before the end of the week. I will let you know the results.

It may be a while before I have a chance to install the new Pressure Sensor. The torque screw has the head stripped out so I will have to use an easy out to get it out. That requires that I remove the motor mount to gain access. The instructions are not quit up to what I need, as it shows using a engine holding mechanism while removing the motor mounts. Not sure how I do this as the mounting point I see is attached to the motor mount. So I will look at this in a couple of weeks when I return from vacation. I hate these torque screws as they seem to strip out too easy. Of course when I look at the official instructions, they show tools that I don't have. I need to add to my tool chest. I may have to use a cut off tool and remove the pressure sensor and then attempt to remove the screw. If I do this and don't succeed, I will have to take my other Volvo a 2003 V40 from my teenagers and use it to go to/from work. Sometimes I regret being a home mechanic - but then again - how much would I pay a professional mechanic to do the job? So, I will move forward and get my spare car running properly (1992 Buick Century) so that I can work on my car without worry about it being out of service.

2X4 under the oil pan and lift the engine 1/2 inch?

For dead torx screws, I usually take a small drill bit and make a divot near the edge, just large enough to set a punch in it. Then take a hammer and strike the punch to get the head of the screw to start turning. Drilling it out is a real pain and may cause further anguish.
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Keeping it running is better than buying new