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  #1  
Old 10-16-2007, 09:05 PM
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P1492 Battery temp sensor?

This is the code my truck is flashing, which is the battery temp sensor. I've never heard of one. Where is it located?

Vinny
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  #2  
Old 10-16-2007, 09:25 PM
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It's located on the bottom of the battery tray. Looks like a thin plastic disc at the bottom when you take your battery out, with a plug in the bottom of it (under the tray)
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  #3  
Old 10-16-2007, 11:39 PM
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How does it work? It can't be by battery temp, I wouldn't think, because I tried to clear the code yesterday when the truck was cold from sitting. Very strange!

Vinny
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  #4  
Old 10-17-2007, 12:12 PM
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It tells the PCM the battery temp and adjusts the voltage regulator accordingly, i believe. Sensor is just bad, replace it.
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Old 10-17-2007, 01:25 PM
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It's a thermister. It's basically a resistor that changes with temperature and sends that reading to the PCM. It does go by temperature, but yours is probably bad.
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  #6  
Old 10-17-2007, 02:06 PM
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Thanks guys!
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  #7  
Old 10-17-2007, 05:27 PM
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is there anyway to bypass this sensor?
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  #8  
Old 10-17-2007, 07:03 PM
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probably, since it's a resistor. why would you want to do that?
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Old 10-17-2007, 07:09 PM
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Quote:
Originally Posted by mlobitz View Post
probably, since it's a resistor. why would you want to do that?
i relocated my battery, and have two other codes for other stuff also on. i just want to start getting rid of these codes......
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  #10  
Old 10-21-2007, 12:29 AM
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I was told a couple of days ago that you could cut the wires and tie them together. Then clear the code. I chose not to but I will wait to fix it a little while. The sensor is $44 at Autoxxxx.
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Old 11-14-2007, 10:14 AM
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Hell, just go to a scrap yard...gotta be a bunch of Mopars that use the same sensor.

The whole point of it is to tell the PCM what temp the battery is so it can tailor the charging system to that to avoid damage and provide peak charging.
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  #12  
Old 11-14-2007, 07:30 PM
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I was installing a remote trans filter below the battery tray and lost/ threw away that sensor which set off the check engine light (very annoying ) I went to a junk yard found one and offer them three bucks...which was the exact amount of dollar bills in my pocket at the time problem solved
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Old 11-14-2007, 09:14 PM
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Quote:
Originally Posted by scentralpirate View Post
I was installing a remote trans filter below the battery tray and lost/ threw away that sensor which set off the check engine light (very annoying ) I went to a junk yard found one and offer them three bucks...which was the exact amount of dollar bills in my pocket at the time problem solved
You make it sound so dam easy
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