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Old 07-03-2008, 07:28 PM   #1
eminehart
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Default All of a sudden.....Low Progaming Voltage

I have an 02 wrx. All of a sudden I cannot flash. This is the first time in over a hundred flashes. I am getting the low programming voltage error. It is 4.3 instead of 12. I checked the jumper so don't ask.
The voltage at the jumper is 4.3 there is no short or break because the voltage goes all the way to the OBDII port.

I tried resetting the ecu- with software and by pulling the negative.

Does anyone else know what the voltage should be at the jumper and maybe thats causing my problem. The reason I ask is that at one time I tested the voltage and i think it was 12.

I need help does anyone know how to fix this?
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Old 07-03-2008, 07:41 PM   #2
Jon [in CT]
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Some people route 12V to the jumper from another source to get around this problem.
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Old 07-03-2008, 07:52 PM   #3
eminehart
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Can I route any 12V directly to the jumper and it will flash safely. And should it be directly to the Blue wire(that goes to the OBD port) or the Red/white wire (that goes to the ECU and is hot with the 4.3 voltage) or should i connect both wires to a 12Volt source.
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Old 07-03-2008, 09:31 PM   #4
eminehart
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So should that red/white wire be 12V.
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Old 07-03-2008, 10:46 PM   #5
eminehart
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well i got it to flash

Just cleaned the OBD2 ports terminals with some Electric parts cleaner.

I was getting worried........................................... ............

BTW it's only 4.3 Volts there.

Last edited by eminehart; 07-06-2008 at 03:03 PM.
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Old 07-05-2008, 02:51 PM   #6
wrx2k4
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did you use the spray like you would use to clean out your desktop key board? or something diff im having the same problem and this may help me out alot!
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Old 07-06-2008, 03:02 PM   #7
eminehart
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Quote:
Originally Posted by wrx2k4 View Post
did you use the spray like you would use to clean out your desktop key board? or something diff im having the same problem and this may help me out alot!
no the electrical connection cleaner stuff. I got CRC QD-electronic cleaner. If you have MAF sensor cleaner you can use that as well. I believe it's some kind of alcohol blend. They are available at all auto parts stores. Probably a BigBox store as well but less likely.
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Old 07-06-2008, 09:50 PM   #8
wrx2k4
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^^^awesome im going to try it out and see what happens. thanks for the input by far the most helpful piece of info yet to be posted. I was to the point of buying a new ecu or burning the car lol! j/k
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Old 07-10-2008, 11:11 PM   #9
eminehart
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Quote:
Originally Posted by wrx2k4 View Post
^^^awesome im going to try it out and see what happens. thanks for the input by far the most helpful piece of info yet to be posted. I was to the point of buying a new ecu or burning the car lol! j/k
I don't think I had heard of a OBD2 connection being that gunked up before. I do have a lot of miles 172,000 and driven down my fair share of dusty roads.
I just gave it a shot and it worked out for me.

BTW are you having any luck?
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Old 07-11-2008, 12:02 AM   #10
nhat
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172k on an 02?! damn

do you ever go to any pirates meets? i went to a couple while i was out there
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