My computer keeps erasing the stored codes
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My computer keeps erasing the stored codes
I have a 97 Ford F350 460 EFI. I fixed the problems with the lean conditions. I drive it around, it lets me know the fuel trims, no problem. The next day I scan with OBD II and the vehicle has no data stored. Battery is fine. Any suggestions?
Thank you, Michael
Thank you, Michael
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,709
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From: SE Florida
There is a pin on the PCM called KAM power. If it doesn't have +12v on this circuit it will erase the codes every time the key is turned off. I don't have a diagram to be able to tell you which pin this is.
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I will check this out. Thank you
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Freshman User
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i will look for that pin. Thank you.
p.s. but I do get to read the scan, it just goes away after a day.
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