P0572

moparguy04 · Post by **moparguy04** » Wed Dec 05, 2007 2:43 pm

Okay, today on my way to school, I turned left at this red light like I always do but this time my CEL came on. When I got to school I did the key dance and got code P0572 which stats "BRAKE SWITCH #1 CIRCUIT LOW" I search Google and could not find any information but it was also tied into the cruise control also but I don't have cruise control. I have called the dealer and they want me to bring it in but I don't have the time right now to take it is. I called two different dealers the first one thought it was funny that my light was on and I didn't have cruise control and the other didn't know nothing about it, they went on about an O2 sensor or something totally different from what I told them. So thats why I came here because I uselly can find all the answer I need here but this one I couldn't find. I searched for an hour at school during my break and then here at home. If anyone can help that would be really helpful!

Post by **racer12306** » Wed Dec 05, 2007 2:51 pm

send BlackRoseRacing a PM, he is the man when it comes to this stuff.

You probably won't get a response today, but probably about 6a tomorrow morning (EST) you will have one. He is really fast about getting info to people.

Give him your Year/Make/Model/Engine and the code.

moparguy04 · Post by **moparguy04** » Wed Dec 05, 2007 3:00 pm

Ah sweet thanks for the info!

Post by **Diablo0** » Wed Dec 05, 2007 3:08 pm

Have you checked the switch thats located down at your brake pedal? Diagnostic manuals want you to check resistance..

Turn the ignition off.
Remove the Brake Lamp Switch and disconnect the harness connector.
Measure the resistance between the (Z1) Ground circuit terminal and the (K29)
Brake Switch Signal terminal at the Brake Lamp Switch.
Apply and release the brake pedal plunger while monitoring the ohmmeter.
Does the resistance change from below 5.0 ohms to an open circuit?

If Yes - Go To Next Step
If No - Replace the Brake Lamp Switch.

Turn the ignition off.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the (K29) Brake Switch Signal circuit in
the Brake Lamp Switch harness connector.
Is the resistance below 100 ohms?

If Yes - Repair the short to ground in the (K29) Brake Switch Signal
circuit.
If No - Go To Next Step

NOTE: Before continuing, check the PCM harness connector terminals for
corrosion, damage, or terminal push out. Repair as necessary.
Using the schematics as a guide, inspect the wire harness and connectors. Pay
particular attention to all Power and Ground circuits.
If there are no possible causes remaining, view repair.

Replace and program the Powertrain Control Module in accordance
with the Service Information.

Panhead · Post by **Panhead** » Wed Dec 05, 2007 3:16 pm

did you check your fluid level?

moparguy04 · Post by **moparguy04** » Wed Dec 05, 2007 3:27 pm

yeah I checked the level..I am going to check the brake lights to see if they come on but if they work I will take it in to see whats wrong and have the warranty i have and have it replaced. Thanks for the info

Post by **racer12306** » Wed Dec 05, 2007 3:29 pm

When did you purchase the car?

the bumper to bumper was 3 years/36000, the powertrain was 7/70000 miles. unless you got the extended warranty.

moparguy04 · Post by **moparguy04** » Wed Dec 05, 2007 3:42 pm

i bought from a used lot. in 05. It had the 3yr/36k but i bought one that is bumper to bumper till 100k so it should be covered. I don't know if i even have the 7/70 since i can't find anything about like i did with the 3/36 warranty

Post by **racer12306** » Wed Dec 05, 2007 3:45 pm

i think the 7/70 stopped in 05 or 06. all 04 model year cars should have the 7/70, excluding diesels and SRT's

moparguy04 · Post by **moparguy04** » Wed Dec 05, 2007 3:48 pm

I just checked my brake lights and they do work. The only options is the trip odometer and/or the pcm. I did drive over 1k in two days for thanksgiving. Dont think that would be it but who knows..

Post by **racer12306** » Wed Dec 05, 2007 3:53 pm

nah, that wouldn't do it.

my parents have done a trip from rochester, ny to tampa, fl a number of times, non stop.

many people drive a lot of miles at a time.

moparguy04 · Post by **moparguy04** » Wed Dec 05, 2007 3:57 pm

Didn't think it would bother it either. The car was a rental car before I got it. But I will look at the switch or anything under the hood that looks odd.

moparguy04 · Post by **moparguy04** » Tue Dec 11, 2007 10:40 pm

Went to the dealer today and they told me it was the switch inside the car and it's going to cost 100bucks to replace. They rest the CEL and it isn't on any more so I don't know if it was a error in the system or what but I will get it changed out, might do it myself unless I can get it covered under my Warranty that I have on the car. Just thought I would let everyone know!

srtjesse · Post by **srtjesse** » Mon Aug 17, 2009 9:40 pm

i just got this code i was messing with the brake booster last night ill could that be the problem?