re: Any mechanics or car experts here? O2 sensor heater circuit

Fords are picky too. People put all kinds of cheap chinesium crap parts in their cars and counterfeit parts are everywhere now too, especially NGK spark plugs.

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Reference the O2 sensor and make sure it's the correct one. People box swap them and return them to parts stores.

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Always inspect the part before you pay. To make sure it’s the right part and to make sure no one pulled a switcharoo. I’ve found used parts in the box.

And you have to watch Amazon parts as well.

The heater circuit for both rear O2 sensors comes from a single source. You say you cleared codes and the light came back immediately)you also said 30 mi?). This makes sense if you have no 12v source to the sensors. The PCM will "know" it right away and turn on the CEL. You must test to see if you're getting the 12v on the heater circuit when you start it up.
The catalytic converter issue relates to fuel mixture and is a separate issue with different codes. Lean,rich, etc. The CEL also won't come on immediately on a converter issue as it takes mileage for the PCM to test the fuel mixture at the O2 sensors. Bad cats are a common issue;however, they are not to be confused with an o2 heater problem. Again, these are separate circuits..
Step one is making certain you have the code definition correct. This saves you from going down the wrong path. If it is indeed O2 heater codes start by testing for 12v on the heater circuit If you have no 12v you must then find where the circuit has been interrupted. Fuel mixture portion of o2 does not use 12v-typically has a reading under 1.0v and (hunting) up and down under 1.0v while running. O2 has only 1 wire with 12v and that one is for the heater. The other two wires are ground wires-one for heater and the other ground is for fuel mix circuit, Good luck to you!

Do what windmill says above. Make sure you are getting power the O2 sensor heaters.

Also make sure the wiring is not touching anything hot like exhaust piping. It can melt the wire coating and cause a short. Had that happen with transmission wiring. Kept blowing solenoid fuse. Couldn’t see it until I visually inspected every inch of the wiring. Doesn’t take much wire exposure.

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BTW, that model truck and that engine is kinda shitty.

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I basically had this same truck years ago and traded it in for a larger cab when we found out my wife was pregnant. Only difference was color and that was an '08 with higher mileage.

That thing was solid! The worst repair I did on that thing was replacing the power steering pump pulley.

For purpose of making certain you identify the correct component I suggest using a wiring diagram. I've accessed it and your rear left o2 has:
gray/red
red/lt.green
white/black
violet/white
Right rear O2 has:
gray/red
violet/green
tan/yellow
violet/white
The violet/white wire on each should have 12v with engine running. This circuit comes from fuse#33 in the central junction box near the right A PILLAR. This is a single 15amp fuse.
Again I wish you good luck . I will continue to check back on your progress here.

Get you a reliable code rrader that Bluetooth s into your phone. One that gives live info. Drive around and give the readings on both banks to chat gtp (or other similar)

MAF sensor would indicate bad airflow to both sides, and or an oxygen leak somewhere after maf.
Does it rough idle? Sluggish acceleration at low rpm?
Could be a vacuum leak somewhere downstream of the maf.
But you can get all kinds of info from code reader that tells you if your too rich, or too lean etc etc

Im bringing mine for. Vacuum smoke test this weak. Im have zoned into my issue which is just on bank 1, which is hard access because located against firewall, etc

You know it's an 05, right?

That's 20 years, and it's still running pretty well.

The 02 sensors literally heat up.
Let the truck sit overnight, in the morning turn the key to the run position without starting it and let it sit there for 5 minutes. Climb under the truck and wrap your hand around each one.
If the wiring and sensors are good, they will be warm.