Thread: P0603 "Generic Permanent"
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Old 05-19-2017, 06:46 PM   #1 (permalink)
40 to 332
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Default P0603 "Generic Permanent"
Service Engine Soon" light lit up this morning. DTC reads "P0603 Generic Permanent". Has something to do with the Powertrain Control Module (PCM) memory. I can't clear it using the OBDII reader, presumably since it's "permanent". Anyone experienced this? Battery had been disconnected for a few hours yesterday. Car drove fine today … no hesitation, smooth idle … but I'm stuck with the SES light being on. Looking for possible fix. Thanks!
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