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2015 GT 5.0 AFR’s reading 28-29

Junks550

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Hey guys,

Recently bought a 2015 mustang gt 5.0. Car has cold air intake, long tubes, xpipe, and tuned. Supposedly tuned by bama.
Car came with the SCT programmer. It’s currently throwing a code for bank two o2 sensor. Car only has the front two o2 sensors in the headers. On the SCT the air fuel ratios are reading 28-29 which I know I super lean and don’t want to run the car till I know it’s safe. But I did drive it some to see if the readings change at all and they do not. I’m looking for advice on where to start on figuring out if the readings are accurate or what the issue is. Car doesn’t throw any running lean code. Any help is appreciated.
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Junks550

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Code is P0155 (O2 sensor heater circuit bank 2 sensor 1)

Also has a P2195 code
 

Grimace427

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Do the O2 sensors have wiring harness extensions? If yes, replace them with quality ones(Kooks, ARH, any of the top header brands should be able to supply them). If not, replace the driver's side(bank 2) O2 sensor.

An AFR of 20+ at idle is perfectly normal. Cruise would be around 15-16ish, WOT would be 11-12ish.
 
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Junks550

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I was able to get it on a lift today. Guy I got it from just left the front passenger side sensor hanging there instead of getting an extension.
 

jrsimon27

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Car has o2 sensors and widebands from the factory make sure they are working properly and clear the codes. After that get a lund tune bama in the past have not had good reviews dont know now.
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