P0573 is the code for the check engine light whats it mean

which make of car and year search finds you the part

are you up to DIY and purchase of parts fitting new parts

its sensors near the top of the brake pedal under the dash

P0571 Cruise Control/Brake Switch A Circuit Malfunction
P0573 - Cruise Control/Brake Switch A Circuit High

C107C - Brake Pedal swithch 1/2 Stuck
C107D -brake pedal switch 1/2 correlation

some examples of locations cruise/brake switch

https://www.engine-light-help.com/chevy-check-engine-light
.html

This should help

Possible causes
- Faulty Brake Switch
- Brake Switch harness is open or shorted
- Brake Switch circuit poor electrical connection
What does this mean? When is the code detected?
The P0573 codes is set when the stop light switch signal is too high.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Stop light inoperative
- Cruise control system inoperative
P0573 Description
When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (ECM). When the ECM receives this signal, it cancels the cruise control.

P0121 is : throttle / pedal position sensor/switch A circuit range/performance problem
P0573 is : cruise control /brake switch A circuit high
first check : there is two switch on brake pedal linkage one for brake light and the second with rubber hose for cruise control
try to push switch toward brake pedal to ajust
tps code P0121 check for wires if they are cut
hope it helps

P0573 Brake Switch A Circuit High Input

Go here for an explanation:

http://engine-codes.com/p0573_chrysler.html

which engine, it is a PCM DTC question so....
is this a question.

1. how does the PCm conduct this test
2. what does it mean
3. what are possible causes
4. how does the technician do the tests in the FSM do find real cuase?
5. or do you just want a wild guess?
6. or ? say?

P0573 (not an oh)
P0573-BRAKE SWITCH 1 STUCK OFF

page, 2963 in the FSM book,
switch bad, or wires to it bad.

P0483 Cooling Fan Rationality Check Malfunction
This code is set when the Engine Coolant Temperature (ECT) sensor signal fails to rise above 15 mV (~1°F) after 2.5 minutes of operation. You probably need a new ECT sensor.

P0573 Cruise Control/Brake Switch A Circuit High
This can be caused when the brake switch is set too high. Possibly a faulty brake switch.

P0573 is for your brake switch stuck. It means you either have a bad brake switch, or a bad wire.

The codes listed all point to the transmission being in bad shape or some wiring got crossed. Check with a trans shop for an estimate.