I need help...again..

[sliderr]

I need help see attachement :( again troubles they alreayd replaced my MAF ..

[pk2]

Error 35 is a little mysterious to me but the other 2 seem sort of self explanatory; You have a couple of bad 02 sensors One in frnt of a cat and one behind. You may find that by replacing the 2 error 35 will disappear.

Regards, Pk

[sliderr]

The thing is they already replaced the o2 sensor mentioned..

[kbrandsma]

The thing is they already replaced the o2 sensor mentioned..

You may want to check what brand they replaced them with. I replaced mine initially with Walker brand knock offs and had nothing but problems. You may also want to swap side to side (bank 1 with bank 2) to see if your problem switches sides. They are very easy to replace or swap. All you need is a 22mm metric O2 wrench and a long regular screw driver (to open electrical plug).

Also check out TSB #9902. It is not advisable to spray the connections with any type of electrical cleaner.

Mike Focke's Website is also excellent. PRESS HERE

Edited May 3, 2011 by kbrandsma

[infocusf8]

The problem with Porsche codes is they are not always an indicator of what is really causing the problem. For instance you replaced 02 sensor because an error code pointed to them but what may be the real culprit is something ahead of them causing the exhaust mixture to exceed the limits the ECM is set for. Your MAF may be pulling a code but it may not be the MAF it may be something behind it that is causing the air/fuel mixture to exceed the limits of the ECM causing the exhaust to exceed the limits of the 02 sensors. It is confusing and even some Porsche mechanics give in to the "shotgun" repair strategy of just replacing a whole system which costs you big bucks. The other side is to guess what may be the problem and start replacing parts that may or may not be bad. That also gets expensive and frustrating. One really needs to know what they are doing to accurately interpret what the codes are telling you that is why Porsche has developed a diagnostic tree to follow when these things come up.