were is the fuse located for the O2 sensor
Under the intake manifold.
There are two knock sensors on a 2004 2500HD V8 6.0 Chevy Silverado. Both of the sensors are mounted under the intake manifold on the engine.
Oxygen O2 sensor Heater Circuit Malfunction (Bank 1, Sensor 1) Should be drivers side closest to engine.
The air fuel sensor heater circuit is also known as a Oxygen Sensor. It's main purpose is to detect the amount of oxygen in the exhaust gas compared to the outside level of oxygen.
Screew it out, and screew the new 1 in.
Heated oxygen sensor heater circuit malfunction (bank 1, sensor 1): Open or short in heated oxygen sensor heater circuit Heated oxygen sensor heater malfunction (Haynes Repair Manual)
That would be the passenger side of the engine and it will be the first oxygen sensor that's screewed into the exhaust pipe on that side.
Trouble code P0141 means:O2 sensor heater circuit malfunction (Bank 1 Sensor 2)
Trouble code P0340 means:Camshaft position sensor circuit malfunction
Bank 2 sensor 2 refers to the oxygen sensor on the passenger side of the exhaust system and after the catalytic converter. heater circuit is the oxygen sensor or the wiring going to it, it is what is called a heated oxygen sensor. Google image search oxygen sensor and that is what it looks like, and they can be a bear to get out.
bank 1 sensor and bank2 located under air intake (plenum) on top valley of 03 6.0l 364 gas Chevy engine.
There are 2 sensors on the 6.0L and both of them are under the intake manifold. You can not see them are even get to them until you remove the intake.