o2 sensor reading

[SlcHummer]

While looking at various readings in the OBD Fusion app I noticed the O2 voltage on bank 1 sensor 1 was reporting very erratically in comparison to the O2 voltage reading on bank 1 sensor 2. Does anyone know if this is normal behavior or should I be looking to replace an O2 sensor or other part to resolve? I don't have an CEL showing or any symptoms, only noticed this behavior in the OBD Fusion app.

My rig is an 06 3.5l H3 with 156k miles. Here are a few screenshots of the O2 voltage reading while idling at a red light for about 10-20 seconds. Thanks in advance.

 

[adventuredad]

My 06 threw a check engine light a couple days ago so I got out the scanner and have been watching things through the app, the trouble code was a fluke and cleared just fine but I noticed the O2 sensor readings jumping back and forth like yours. I've been watching and wondering if it's normal as well, the short fuel trim keeps jumping along with it as well. I'm curious to see what others report.

 

[ludevick]

Do you experience a shakey steering wheel when idling at red lights like I do?


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[rascole]

Voltage looks normal. O2 sensors are quick to respond to differing A/F ratios, several times a second. You are just seeing a moment of a constantly fluctuating voltage.

 

[SlcHummer]

Do you experience a shakey steering wheel when idling at red lights like I do?


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Yes however I've assumed this to be related to the age of my motor and/or unbalanced I5 motors in general. I'm hopeful an O2 sensor might provide some relief but doubtful.

 

[ludevick]

That’s what I’ve been assuming. Always hopeful someone will discover something that may help minimize some of the natural traits of an i5.


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[JPaul]

That’s what I’ve been assuming. Always hopeful someone will discover something that may help minimize some of the natural traits of an i5.


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This has already been accomplished. It's called a V8... :giggle:

 

[SlcHummer]

This has already been accomplished. It's called a V8... :giggle:

Not all of us can be so lucky lol. On that note, I'll soon be on the hunt for another vehicle, which on the top of the list is every mans dream....an H3T Alpha/Adventure, assuming I can locate and capture one of these mythical creatures! If any members here are looking to part with such a vehicle/treasure, please let me know .