mipinc

I got the ECU fault code of 34 and 77. One is Knock Sensor and the other is rear heated oxygen sensor. Which one should I replace first to fix this probelm?

JustTry

i say both.....but im not too experienced with consequences, but IF YOU HAD to pick i'd say knock...jsut wait for more responses....

Jamsan

iTrader: (2)

go with the o2 sensor first....i believe its cheaper then the knock sensor, and 50% those knock the knock sensor off (lol?)....i wouldnt replace the knock sensor until after the o2 sensor, because that is a definate error.....reset the ecu, drive around for a day, and then check it again, and if it still says the KS, change it ....i too have tried denying it, but i finally broke down, and am buying one tomorrow (KS) and installing it on saturday.....now i cant buy my friggin y pipe ...fudgin nissan