Nissan Repair Questions? Ask a Mechanic for Answers ASAP
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Dear customer, after the replacement of the sensor, have you done a check on the exhaust catalyst? Also, have you cleaned the fuel injection and air intake system?
Dear customer, the catalyst has to be disassembled, in the garages we use a special digital sensor camera and they are introduced through that slot, what happens with the catalysts is that the soot accumulates and it clogs the correct passage of air which causes the internal catalyst pressure and temperature to rise up and is detected by the sensor.
It is important to check the injection system because if you have a direct injector or the pressure is very high in the fuel injection system, this increases soot production in the exhaust and causes it to clog quickly or simply the temperature sensor detects a higher temperature outside of normal range due to excess engine smoke from direct injection or high pressure.