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Driving to work my Check engine light came on but no reduction in performance was noticed. Upon arriving at work I performed the ignition key ON-OFF-ON-OFF-ON and the flash counts came back as follows:


so it would be code 12, 43, 43, 45, 55

I know 12 is just the code that the battery was disconnected within the last 50 key-on cycles and 55 is the end of error messages.

I believe 43 deals with cylinder misfire, so does it mean 2 are misfiring with the double 43s?

The 45 code is a mystery for me. Any clues?
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