Hello all,
I pulled these codes yesterday after my car just suddenly cut off. When I tried to restart it wouldnt turn over. Happened to be 1 block from autozone. According to the codes I replaced #4 spark plug and iginition coil and the car started right up and I drove straiggt home (35 min ride) and the car shut off right in front of my house. I need the rear heated sensor bank 1(codep0304) right. Where is that located on the exhaust. I couldnt find it at all. I researched that wire is white. I need help guys and csn I use a autozone bosch brand? And where is the p1273 sensor located? I assuming thats why she shut off but she started riggt up this morning but I took wifes car. Thank you guys for any input. Detailed picture requested.
Blake



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Trying to remember.... theres 2 O2 sensors close to the "Y" pipe. Jack up car and access from the passenger front.


If you look closely enough by the passenger front axle area - - and upwards to the Catyl, you will also see the other O2 sensor.


I think the 4th one is on top of the Catyl, and have to access from the firewall area???


Did all mine but cannot tell which one would throw that code... (I changed out all of them).


http://www.engine-codes.com/p1273_nissan.html


http://www.obd-codes.com/p0138


Just change out all the 02 sensors - - when one goes bad, the other slowly goes after... IMHO