Nico Posted July 21, 2010 Share Posted July 21, 2010 I changed my O2 sensor last winter on my Pathfinder 94. Now I have the check engine code for the EGT sensor (code 35) What's the difference between these two sensors? Are they related? How much can cost to change the EST sensor? Thanks a lot for your help Link to comment Share on other sites More sharing options...
87pathy Posted July 21, 2010 Share Posted July 21, 2010 the part is 100 bucks US, easy to change, they are related.. as they are part of your exhaust and emissions system. Link to comment Share on other sites More sharing options...
morpheus Posted July 22, 2010 Share Posted July 22, 2010 I changed my O2 sensor last winter on my Pathfinder 94. Now I have the check engine code for the EGT sensor (code 35) What's the difference between these two sensors? Are they related? How much can cost to change the EST sensor? Thanks a lot for your help EGT - Exhaust gas temperature O2 - Oxygen sensor 1 tells the ecm how much oxygen left in the exhaust, the other tells it the temperature of the exhaust. Link to comment Share on other sites More sharing options...
silverton Posted July 22, 2010 Share Posted July 22, 2010 WD21's have a stock EGT sensor? That blows my mind, where is it?? Link to comment Share on other sites More sharing options...
tmoore4512 Posted July 22, 2010 Share Posted July 22, 2010 Yea, I am thinking the same thing...where in the world is that sensor?? Link to comment Share on other sites More sharing options...
morpheus Posted July 22, 2010 Share Posted July 22, 2010 If memory serves correctly, it's near the EGR valve somewhere. Link to comment Share on other sites More sharing options...
silverton Posted July 22, 2010 Share Posted July 22, 2010 Yup, it is actually part of the EGR system. It's on page EC-16 of the FSM. Link to comment Share on other sites More sharing options...
Nico Posted July 28, 2010 Author Share Posted July 28, 2010 (edited) Thank you for your answer to my question. I guess it's not really bad if I keep driving with this warning? Edited July 28, 2010 by Nico Link to comment Share on other sites More sharing options...
tmoore4512 Posted July 29, 2010 Share Posted July 29, 2010 Hmmm...as silly as it sounds since it is certainly no diesel... Tapping off that sensor for an EGT gauge? Hahahaha Link to comment Share on other sites More sharing options...
Nico Posted April 8, 2011 Author Share Posted April 8, 2011 (edited) I still haven't changed the EGT sensor, my check engine light is always there. My mileage is worst than before, is it possible it's related to the EGT sensor? Edited April 8, 2011 by Nico Link to comment Share on other sites More sharing options...
amo1dun Posted April 14, 2011 Share Posted April 14, 2011 I still haven't changed the EGT sensor, my check engine light is always there. My mileage is worst than before, is it possible it's related to the EGT sensor? I thought the exhaust gas temp sensor was only on cali models???? I think it is dude Link to comment Share on other sites More sharing options...
Nico Posted April 14, 2011 Author Share Posted April 14, 2011 (edited) What's a cali model? If I don't have any EGT why my check engine code is 35 (EGT sensor)? Edited April 14, 2011 by Nico Link to comment Share on other sites More sharing options...
sewebster Posted April 14, 2011 Share Posted April 14, 2011 cali=california, they have special models with tighter emissions controls. EGT being part of that would not be too surprising. Checking to see if you have an EGT would be a good idea. Should be under the EGR valve as per the FSM page cited. If you don't have one, then the code is very confusing. Link to comment Share on other sites More sharing options...
5523Pathfinder Posted April 15, 2011 Share Posted April 15, 2011 (edited) I changed my O2 sensor last winter on my Pathfinder 94. Now I have the check engine code for the EGT sensor (code 35) What's the difference between these two sensors? Are they related? How much can cost to change the EST sensor? Thanks a lot for your help Your EGT sensor is really the EGR temp sensor. It is there to detect flow of the EGR Valve. It may have failed or your have something else going on. You can remove the sensor and inspect for carbon buildup. I have a hunch your EGR valve is not working. You can test it by starting the engine, put your fingers on the bottom of the EGR valve and push up lightly on the diaghram. This should make the engine stumble. If it does stumble, then you have a EGR control problem(vacuum). Check the BPT valve pressure tube(find it by following the vacuum lines) and see if it is split. If its ok, pull the metal BPT tube out and see if its clogged with carbon. If the engine does not stumble, there may be a blockage in the EGR system, or the EGR valve itself has failed. Let us know what you find. Edited April 15, 2011 by 5523Pathfinder Link to comment Share on other sites More sharing options...
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