2004 Silverado O2 Sensor Fuse

The modified test harness with the light. 4pcs oxygen o2 sensor for 2003 2004 2005 chevrolet chevy suburban 1500 silverado 1500 escalade tahoe sierra 1500 yukon xl 1500 5 3l upstream downstream 4 2 out of 5 stars 13 63 99 63. Once you determine that the fuse is okay check for voltage at the o 2 sensor harness connection.

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The auto zone readout says code p0135 which indicates a fault in bank 1 sensor 1 o2 electrical circuit.

2004 silverado o2 sensor fuse.

All for brake calipers. Ive read other threads about the fuse being bad so i checked and replaced the fuses for the cig lighter and the aux power in the under hood fuse panel. In that case first check for a blown fuse. Ive also replaced the fuse in the side dash labeled aux 2.

Then a week later the cel came back on and the fuse was blown again. Replaced the fuse and the codes cleared. On my 2004 silverado the obd 2 port and the aux power socket doesnt work. Mechanic friend said to check each fuse but does anyone know if there might be specific fuses to check and not all fuses.

I had the o2 sensor codes and check engine light on for a while as i saved for a new sensor and never thought to check the fuse. Next i go to look in my fuse panel under the hood for the oxygen sensor fuse. Where is the dang. Location of fuse on 2004 sliverado for bank one sensor 1 for oxygen sensor chevrolet 2004 silverado question.

There will also be times when the light will remain off with the engine running. I checked the connections at the o2 sensor and all is well. If the o 2 sensor s heater had shorted out the fuse may have blown as well. For chevrolet silverado first generation 1999 2000 2001 2002 2003 2004 2005 2007 model year.

Here is a fantastic video that covers all aspects of diagnosing a p0161 trouble code. I noticed the fuse was blown when i was checking for something else unrelated. Wrong o2 sensor if you are getting p0161 after having recently replaced your oxygen sensor it may be that the replacement is wrong or bad. Blown heater sensor circuit fuse here s how to test if a fuse is blown youtube.

Also p1258 engine metal over temperature protection. It s an o2 sensor according to the above link and it is bank 1 sensor 2 low the 2 meaning that it is downstream past the catalytic converter but not on the manifold. I replaced the sensor but no fix. Low and behold there is no indication from the fuse box diagram that there is one.

Fuse box in engine compartment. I was good to go. Ok so i have a code for my 2004 silverado 2500hd 4x4 downstream o2 sensor heating element not working.