2022 Trouble Code P1128

[workky]

I have no idea what this is, There is just not a lot of info out there on this code. I ran a few test with the cheap reader i have, but i have no idea what the numbers mean? Can anybody help me out??

Thanks

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[jludave]

Can anybody help me out??

That code is a tricky one.

What are the common causes of code P1128?
The most common causes of code P1128 are many and varied, and could include one or more of the following-

• Defective or failed upstream oxygen sensor (Most common)
• Contaminated oxygen sensor sensing element
• Abnormally high or low fuel pressure
• Damaged, burnt, shorted, disconnected, or corroded wiring and or connectors that affect the signal, control, feedback, or reference voltage circuits of the affected oxygen sensor, or any other implicated engine sensor
• Excessive oil consumption or other mechanical defects in the engine
• Defective, contaminated, or malfunctioning MAP and/or MAF sensors
• Defective or malfunctioning engine coolant temperature sensor
• Defective or malfunctioning intake air temperature sensor
• Failed or failing PCM or fuel control module, but note that since these are rare events, the fault must be sought elsewhere before any control module is replaced or reprogrammed

https://www.700r4transmissionhq.com/p1128-jeep-wrangler/

 

[XxsullyxX123]

You're freeze frame looks like mine, where it happens around 13 seconds in with ambient temp and IAT showing pretty hot and coolant still low. My bet is a loose connection

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