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Help! Need advise please

 
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Old 18 May 2016, 12:52 pm
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Question Help! Need advise please

Just acquired a 2005 vanilla pt cruiser 76000 miles great shape but it sat for over a year and the check engine lights has come on. Code says issue with brake switch. Replaced switch. Drove 50 miles to reset and light came back on with the same code. Now my horn doesn't work. And I have a fast blinking turn signal on the left which we thought indicated a dead bulb. Bulb was switched still have a fast blink. Please help. Any advise would be appreciated.
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Old 18 May 2016, 03:25 pm
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Default Re: Help! Need advise please

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Originally Posted by Chrissy78 View Post
Just acquired a 2005 vanilla pt cruiser 76000 miles great shape but it sat for over a year and the check engine lights has come on. Code says issue with brake switch. Replaced switch. Drove 50 miles to reset and light came back on with the same code. Now my horn doesn't work. And I have a fast blinking turn signal on the left which we thought indicated a dead bulb. Bulb was switched still have a fast blink. Please help. Any advise would be appreciated.

What was the code you got for the brake switch?
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Old 18 May 2016, 07:43 pm
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Default Re: Help! Need advise please

I am getting 3 codes now since the switch has been changed p0457 p0456 and p0572
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Old 18 May 2016, 07:53 pm
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Default Re: Help! Need advise please

P0572 was the original code.
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Old 18 May 2016, 08:00 pm
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Default Re: Help! Need advise please

Quote:
Originally Posted by Chrissy78 View Post
I am getting 3 codes now since the switch has been changed p0457 p0456 and p0572

P0456: EVAP
P0457: EVAP
P0572: Brake Switch 1 Stuck On
Quote:
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.
All 3 codes could be from a bad vacuum hose. I suggest checking all the vacuum lines especially to & from the cruise control.

P0456/0457 could also be a bad gas cap.
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Old 18 May 2016, 09:37 pm
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Default Re: Help! Need advise please

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Originally Posted by Chrissy78 View Post
P0572 was the original code.
P0572 = Brake Switch Circuit Low Conditions:

Possible Causes:

1. Intermittent condition Fused B+ circuit problem
2. Brake switch sense circuit is shorted to ground
3. Brake switch is closed
4. PCM has failed

Was the installation instructions followed when replacing the brake switch?
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Old 19 May 2016, 12:34 pm
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Default Re: Help! Need advise please

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Originally Posted by Chrissy78 View Post
And I have a fast blinking turn signal on the left which we thought indicated a dead bulb. Bulb was switched still have a fast blink. Please help. Any advise would be appreciated.
My suggestion on checking to see if a blinker is not working is to turn on the hazard lights, walk around the vehicle and check all lights. I know a PT Cruiser is not like this, some vehicles have more than one bulb on each side that blink. There have been times when people would turn on the blinker , see one bulb blinking fast and not check the other side to see if there should be two or more that blink.

The old style mechanical flashers work off of a load/resistance. That's why you have to replace the flasher when you swap to LED lights. There is no resistance and it won't blink.

With saying all of this, I am making sure you are looking a the front and rear of the vehicle to be sure that all of the bulbs that should be blinking are.
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Old 19 May 2016, 09:42 pm
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Default Re: Help! Need advise please

Quote:
Originally Posted by ptcruisersteve View Post
P0572 = Brake Switch Circuit Low Conditions:

Possible Causes:

1. Intermittent condition Fused B+ circuit problem
2. Brake switch sense circuit is shorted to ground
3. Brake switch is closed
4. PCM has failed

Was the installation instructions followed when replacing the brake switch?
I am going to assume that the instructions were followed when replacing the switch because it was done by the mechanic but I can't say for certain.
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Old 19 May 2016, 10:06 pm
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Originally Posted by Chrissy78 View Post
I am going to assume that the instructions were followed when replacing the switch because it was done by the mechanic but I can't say for certain.
Was it done recently? If so I would take it back and ask them to make sure the brake switch is operating properly.
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