Problems and codes

[Marlinmahi]

My truck smells of fuel from exhaust so I replaced the o2 sensors and sprayed out the map sensor. Now I get an intermittent check engine light where I had none before. So I got a code reader from Amazon. The codes are: 111 10 175 176 181 and 189 with the engine off.
Running they are 136 538 and 536. Like I said the o2s are new. what now? Oh and I found the wire in the picture hanging down by the starter. Any ideas where it goes?

 

[Dirtman]

They are all o2 sensor lean codes (well 111, 10, 538, 536 are just nonsense so ignore them). Since you smell fuel the ECM is trying to correct a false issue I.e almost certainly electrical and not mechanical.

It is effecting both banks so a common issue between o2 sensors.

I would check the wiring harness to the o2 sensors, engine grounds, battery itself, and ECM.