P0353 restricted performance

Most are just misfires. Can you remove the spark plugs, clean and check the gap?

https://www.google.com/search?q=09+VW+touareg+P0353+P0174+P0300+P0302+P0303+P0430+P0171

Look at fuel trim on a professional scanner

You still have the same codes for the same cylinder
misfires,IF the codes are correct

The misfires could come from valve issues,the valves themselves
or the variable cam actuators if that applies,or from fuel issues,but
not as likely on all three cyl on same bank

You need to do a cylinder leak down test on all cylinders--to eliminate mechanical issues

Then a cylinder contribution test electrically with scope software

Then scope the timing events,the cam advance events,the crank
position, all layered on the same screen & see if they line
up where they belong.

If the cams are not the issue, then your left with a serious vacuum
leak in the intake on one bank.

What I'm saying, is you have one bank with misfires apparently
not now from the ignition since the coils were replaced

The code P0353 is for cylinder #3. (3rd one back from the front of the engine) on the passenger side. Follow this plug wire to the correct coil pack.

For some reason you question has been duplicated several times, so I will answer this one.
Code 1391 may be a problem with the ABS system, the other three codes are concerning the first 3 coils. Your engine has direct spark so each cylinder has its own coil.
I would clear the codes and see which ones come back after a test drive. If the three coil codes come back the coils would need to be tested.

Kevin, can you give me a little more to work with? I would like year, make and model of your vehicle along with any other symtoms you may have experienced. Please get back to me with this information, and don't start replacing parts that you may not need. Waiting on your response.

I had the same problem. Restricted performance and running rough at 3000 RPM. I have an OBDII code reader and found that the problem was in the air mass flow sensor, which is just after the air filter. I pulled this out and found it was dirty and had butterfly wings in it. The last shop where I had the oil changed replaced the filter for me but put in the wrong size. Close but no cigar. Bought some *** Flow Sensor cleaner at auto store and fixed the problem. Get an OBDII reader with the ability to erase the codes. Comes in real handy.

p0351- ignition coil A primary or secondary fault
p0352- ,, ,,,,,, ,,,,, B ,,,,, ,,,,,,, ,,,,,,,,,,,,, ,,,,,
p0353 - ,,,,,,,,,,,,, C,,,,,,,,,,,,,, ,,,, .,,,,,,,,,,,,,,,,
you may have a problem with yuor ingnition system

Anything can cause the check engine light to go on from a loose gas cap, to a transmission issue. When the onboard computer detects an issue, it will restrict performance so as to not damage the engine any further. An Oil change won't affect this light. The only way to determine the cause of the light is to have the computer scanned with an OBD-II tool (Autozone does this for free) to determine the codes and cause for the light. You can also clear the light with the OBD-II tool, but if the problem is still there, the light will just come back on

My mechanic said that the front cxygen sensors needed to be replaced on my 03.