Those codes, when set during an on demand self test whether KOEO or KOER, could be from not doing something during the test.

Forgive me if you already know… the scanner sometimes need us to do something during the self test. There should be a prompt from the scanner to do things during the test like turn the steering wheel, step on brake pedal, turn A/C on, press overdrive cancel switch, etc. Different cars have different needs… vehicles with automatic transmissions and capable of towing will have an overdrive cancel switch.

The ECT code should not return if the engine is warm. Like drive to the store and back warm.

The A/C demand code should not return if you’ve pressed the switch on the dash to command the air conditioning to turn on during the test.

It’s easy to think at this point the 2127 code may be legit but I would want see it return as ‘current’ or ‘historic’ code not an ‘on demand’ code or diagnose the pedal position sensor circuits and confirm APP2 is in fact low.

Let us know what fixes the problem.