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Voltage drop

Tiny
ZEMORZEMOR
  • MEMBER
  • 2006 CHRYSLER PT CRUISER
  • 2.4L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 99,500 MILES
Does heat cause the voltage to drop. I am asking this question because my car has a p0882 code? It does that only when the outside temperature is up. Aka summer time.
Wednesday, June 8th, 2016 AT 8:01 AM

41 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Heat can effect when codes set if components have to reach a certain temperature before they fail when they go bad then yes. I just looked up that code it asks if there are any TIPM codes?That is the computer fuse box under hood. That would take a professional scan tool that can read all the computers in your car not just the engine and transmission like the diy'er scan tool code readers. That is the first step on the trouble tree. Those TIPM have a high failure rate.
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Thursday, June 9th, 2016 AT 6:46 AM
Tiny
SATURNTECH9
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On this one it is best to know what codes all the computers in the car have. Also it might take a professional scan tool to help diagnose the problem. The way it is going a lot of the time a professional scan tool is need to see what codes all the computers have. Plus it is needed to help diagnose the problem. Which it was not so would have saved a lot of money when I had to buy my professional scan tool.
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Thursday, June 9th, 2016 AT 6:57 AM
Tiny
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  • 486 POSTS
I took my car to a mechanic the beginning of this year. He said the car needs a computer. I did not have money at that time. So last month I bought a manufactured computer from autozone and installed it. It was running fine no code until few days ago the weather was hot 95 degrees and up the check engine light came back. Last year before I replaced the pcm the car goes on limp on mode when only the weather is hot. Now the codes stored in pcm are p0700, p0882, p0633, p0513.
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Thursday, June 9th, 2016 AT 9:10 PM
Tiny
KEN L
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Hey ZEMORZEMOR,

It sounds like the TCM is bad, I have read on other forums that this is a common problem with the make and model of your car.

Let me know what you find so you can help others

Best, Ken
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Saturday, June 11th, 2016 AT 1:39 PM
Tiny
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In 06 pt cruiser ecm and tcm are one unit called pcm. And I replaced the pcm 2 months ago.
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Saturday, June 11th, 2016 AT 7:20 PM
Tiny
KEN L
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It sounds like it is bad again, sorry. Check all system grounds by performing a pin to pin check on all computer wiring systems, check for high ohms or open circuits.
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Saturday, June 11th, 2016 AT 8:25 PM
Tiny
ZEMORZEMOR
  • MEMBER
  • 486 POSTS
Ok I will check the wirings. But can you tell me why the code p0882 comes only in summer time. In winter time its fine
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Saturday, June 11th, 2016 AT 9:35 PM
Tiny
KEN L
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Could be the ambient air temperature sensor give you problems
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Saturday, June 11th, 2016 AT 9:59 PM
Tiny
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I forgot to tell you. There are codes stored in the computer po882 po700 p0633 p0513. However the check engine light is off. Why there are codes but the check engine light is off?
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Saturday, June 11th, 2016 AT 10:03 PM
Tiny
KEN L
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Try to clear the codes and see if they come back
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Sunday, June 12th, 2016 AT 12:04 PM
Tiny
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I cleared the codes last night. I drove the car today all the monitors passed. No codes so far. Hopefully it stays like that
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Sunday, June 12th, 2016 AT 12:19 PM
Tiny
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Today my girlfriend was driving when the car jerked ( I guess it shifted down) because the rpm went up to 3500. So she pulled over and left the car at gas station. When I came back from work I hooked up the scanner actron plus. The codes are p0882 tcm power input low, p0562 system low voltage, p0633 key not programmed ( I replaced the pcm ).P0700. When I started the car and did a drive test I was shifting right

this issue come only when the ambient temperature is hot 95 today and when I drive the car for long period
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Friday, July 1st, 2016 AT 7:47 PM
Tiny
SATURNTECH9
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I see system voltage low code was the charging voltage checked the the car was acting up?
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Friday, July 1st, 2016 AT 8:01 PM
Tiny
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Sorry I could not understand your question?
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Friday, July 1st, 2016 AT 9:18 PM
Tiny
SATURNTECH9
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Was the charging voltage checked when the car was acting up?
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Friday, July 1st, 2016 AT 9:21 PM
Tiny
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No my girlfriend was driving it. She told me she pulled over and turned off the car. After she started the car again and the car was idling almost 2000 rpm
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Friday, July 1st, 2016 AT 9:28 PM
Tiny
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I checked freeze frame data for code p0562 it says ecu voltage was 13.7v
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Friday, July 1st, 2016 AT 10:50 PM
Tiny
SATURNTECH9
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That makes no sense it should be bellow 12 volts I would imagine to set that code
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Saturday, July 2nd, 2016 AT 6:31 AM
Tiny
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This is all freeze frame data

Fuel system CL
Calc load 20%
Ect 214
Stft 12.5
Ltft 4.7
Map 6.8
Rpm2460
Vehic Speed 29
Spark Adv 44.5
iat 160
Tps 16.1
Run time 268
Command evap 0
Fuel level 22.7
Baro 12.5
ECU voltage 13.712
Ambient 97
Load value 14.1
Eq ratio 0.999
Rel tps 0
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Saturday, July 2nd, 2016 AT 1:23 PM
Tiny
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Today I drove the car without ac on. The weather was hot. The check engine went off however those codes are still stored. So if the check engine light went off is that means that there is no low system voltage anymore?
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Saturday, July 2nd, 2016 AT 10:03 PM

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