Siluro

When he gets the exhaust all done and the sensor put back it may well all go away, fingers crossed. At least that will be eliminated soon. Are the TGV a pain to replace or just a matter of removing stuff. Does not look too bad but I have never done it.

I always though bank referred to the bank of cylinders, bank 1 being the bank with no.1 cylinder in the firing order not a section of exhaust but could be. Bank number for each sensor, hmm misleading. If it was an inline it would make no difference, hence i thought it could be just generic and only useful on v8 or something which would have a sensor per bank. flat 4 being 4 cylinder is just recognised as a normal inline. Whatever it is it is as clear as mud.

She should sound nicer now too as a bonus with non standard resonator.

!Removed! hell just noticed within less than a week Darly has become an advanced member must be some sort of record too. 192 posts. Took me well over a year to have that many posts. Wicked

At least you can log the data and hopefully by process of elimination find the problem. Going back and fourth on this thread is starting to become painfull (don't take this the wrong way daryl) 350 posts lol. Please keep us posted.

Stuartie to the rescue.

Yes the center section or the part after I marked on the diagram does not have a cat but a resonator. If that bit is the problem then the sensor is probably ok and it must be something else e.g. TGV. I would rather it be the O2 sensor. I hopefully have not confused Daryl.

If the piece below is foobar then it has an O2 sensor according to this diagram. If it the section after this then this is after the O2 sensor and would not trigger a check engine light and the issue is something else e.g. tgv. Which part of the exhaust has holes? Have we established which part of the exhaust has gone?

No it will not damage by removing the battery. No one is sure as they do not have a wagon. Just go and have a look for your self.

This is what we need to establish. Not sure if the light is connected to the exhaust/sensor or the tgv. I would have 1st removed the check engine light with the reader(lol) and tested it hoping it was a glitch. If it came back on I would have tested the O2 sensor with Multi meter or OBD bluetooth dongle (logging) to see if that was foobar as it quite easy to access. If O2 sensor is ok then it must either be the CAT (which you say needs replacing) or the TGV. If CAT has holes I would have ordered this anyway. If O2 sensor is foobar then bingo, new CAT and sensor sorted. If still failed then I would look at the TGV and start researching this part. When you test drive after resetting the ECU you may need to do a few miles before it relearns. The light may not come instantly for a fault.

This what we said to do when you got your OBD reader but it did not work. Yes the light could be a glitch but judging by the description of the exhaust section it probably is not. I would still do this test if possible.

I would just get the center section and use the old lamda sensor first. If not any better then lamda sensor. That is of course you can get the old one out without breaking it or at all if it is heavily rusted. All based on this 300+ threads but I might take a different route if I could be there.

Just to maybe confuse things the code may be generic for 4 cylinder cars which are usually inline. You could just ignore the bank reference unless V config motor. Kind of falls apart if you own a Bugatti Veyron with a W16 not that you would even give damn if you had one as you get one of your peasants to sort it out for while you take the Bently out. Anyway it could still lead to the sensor if the above is true. Subarus do tick over lower than most cars mine is around 700rpm when warm not sure about a 2.0 turbo though. All i have owned also have a little wobble on tickover exactly to rhythm which i kind of like. Flat fours only really balance when at high rpm. If anyone can explain the wobble I would like to know. I thought it maybe dealing with too much fuel.

If it is the O2 sensor here is one from icp. OEM Part number is:22690AA520 https://www.importcarparts.co.uk/parts-info?id=9639&cat=96&sub=183&sec=403&var=47&dc=0&gen=&searchKey=&searchPart= Maybe Stuartie is right how could one sensor in a single pipe detect a single bank of pistons. Look on the bright side at least it is not a head gasket or bottom end. If original exhaust etc they are getting old now so it should be expect to a certain degree. PUT THAT SLEDGEHAMMER DOWN NOW.

305 replies will it make 400

Take a look on ICP. Think they vary from £70-£150 plus. You could log the sensor if you had an OBD bluetooth dongle and that would give you a clue as to weather it is the sensor but that is something i would have to research myself.

https://www.scoobynet.com/general-technical-10/1046991-fault-code-p0134.html It could just be the sensor according to this thread. My money is on sensor. I believe Bank 1 is the side of the engine that has the first piston in the firing order.

Sure I guess the bearing material welded to the actual crank, ouch. Your last statement answers the OP question depends on the damage. Plus as you mentioned the mileage makes sense to do the lot. @andy3665 So if you love the car that much and your planning on keeping it for a long time then do the crank bearings as well as the HG and while your there anything else, oil pump, etc. Only you can make that decision based on the advise of your builder and your circumstances.

Yes I did mean the bearings not the crank itself as you quite rightly say.

Ahh that I am not sure of without looking.

Only if holes are before the sensor. You can get tgv delete kits or modify them yourself. The engine light would then need deleting from the ecu software. None of wish I have done. Delete kits are probably expensive. If there are similiar to a egr valve I bet it is a solenoid seized. No idea if they are serviceable though.

A bit late but does this help: https://scoobyparts.com/blog/subaru-impreza-turbo-exhaust-system-with-diagram/ Yes that is fooking stupid place to put a cat in front of turbo. TGV all they do is work on cold start too pia.

I have to agree with rosscom that you need the code to verify a new cat may cure check light.

Top notch support. Good stuff

How does 2007 Hawkeye WRX work, is that the same. What cat can be removed without MOT failure if any. Can any be removed without a map?