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I'm one of John's testers too and I have gotten a check engine light as well, but only when I bumped my GoPoint BT1 OBDII adapter. It throws the code U0073 (U0073 Control Module Communication Bus Off) and also throws the traction control light as well. I think, the traction control light will come one anytime the CEL does. IIRC, every thread about the CEL coming on, also involves the TC light as well. My CEL has NOTHING to do with the tune and everything to do with me bumping the adapter.
I had the wonky idle before the tune and I've been nervous reading all the threads about CELs and cam sensors, etc. So far I have 1600 miles on the tune (3800+ total on car).
I did a search on google for the code you got and it pulls a lot of stuff for IMA on Honda hybrids. The subaru stuff it finds is related to the gas cap and emissions. I'd make sure your gas cap is tight, reset the light, and see how it goes.
The bad cam issue codes are P0017, P0018, P0019 and some others.
I'll admit, I did gasp when I saw the thread title, but I think your car will be OK. Better safe than sorry though. Hopefully John gets his GB fulfilled and has extra cables because I want to get one so I can flash back if I need to.
Ruskymx
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