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Code: P0603

That's fairly innocuous considering the battery was disconnected... I would be concerned if it came back after you cleared it, that would suggest a wiring and/or volatile memory fault. The

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Old 02-07-2015, 06:35 PM   #3 (permalink)
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That's fairly innocuous considering the battery was disconnected... I would be concerned if it came back after you cleared it, that would suggest a wiring and/or volatile memory fault.

The net result of this fault is that the ECU lost all of its long-term learned data. You accomplished the same thing when you reset the ECU, so it's a wash. Clear the code and see if it comes back.
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