Hey,

First off, the three amigo lights have been on since I owned it.. I looked into it and appeared to be the sensor alone not the module. I never had that fixed.

Few years later, the service engine light comes on and the shop pulls codes for O2 sensors. It also needs plugs and wires and motor mounts. I had the shop replace all four sensors, plugs wires, gaskets and install the new motor mounts. I left the shop and the service engine light came back on with the code for the front left sensor, front driver side sensor. They tell me to swap the sensor to the right side and see if the code follows. After spending three grand in their shop, I don't care if it was customer provided parts or their own, I would assume they could take a second look. But no. Sooooo.. I drive the truck to my old mechanic over 3 hours away since it does drive good with a slight hesitation and the surface engine light steadily on.
My old mechanic takes a look and says it's throwing codes for all sensors which doesn't make sense and one of them is not getting any power so he assumes it's the power source coming to the sensors and follows that line but couldn't find a problem. He's anticipating a full harness replacement?
So I left the shop and within an hour the surface engine light started flashing and the truck was running very rough. It's been converted to a camper and being where I was I decided I was home for the night and parked it. It was a beautiful night by the lake I'll say that much! When I got up and left the next day the light was on steady and the truck was running better again.
My question is is all of this sound normal should I have had to replace all four sensors? Is it possible they messed up my wiring harness when they installed the sensors, installed the motor mounts, clean the motor, install new gaskets....

Is it possible that that main module needs to be replaced? Will the ABS light trigger the service engine and make it run rough? I'm a lady who tries to do my own mechanical work but this is all way past the headlight in an oil change 🥴

Honestly, I might just sell the thing but I've done a lot of work to it. New drive shafts battery tires sensors a lot... Correction I had a lot of work done to it I built the bed LOL

 

You might want to identify the year and model of the truck you're talking about, and then post in the appropriate forum rather than this general one.

 

ABS and rough running are two different issues and 2 different lights.

You said replaced gaskets what gaskets ?

O2 sensors can be very finicky, I have one that is on the way out but my Disco runs fine. Rough running is generally spark/fuel (fuel air mixture).
You need to get the 3 amigo sorted, it can effect your braking.

You need to pull the actual codes then post to the appropriate vehicle forum