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Gamera The Atomic Turtle
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3,349 Posts
Discussion Starter #1
Was driving around for a day with no gas cap. After I replaced it , I realized that I should have seen a CEL.
 

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Plug Whisperer
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6,305 Posts
Because we turned the EVAP off in the tune:up:
 

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Gamera The Atomic Turtle
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3,349 Posts
Discussion Starter #3
damn. you're good. Car is even better than when I left. Clutch is much smoother. Gotta get used to letting it out a bit quicker in 1rst though..and reverse.
 

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Carbon Fiber
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1,637 Posts
It woulda been p0456, now I'm throwing this code.

I had the gas tank out recently but, gonna try to replace the cap with the locking stant one 10521 before I dig into the tank again...

If that's not it I guess I'll be working my way in...
 

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Gamera The Atomic Turtle
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3,349 Posts
Discussion Starter #5 (Edited)
so if you are throwing ANY codes, you should get a CEL (stock tune)?
 

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Closer than you think
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2,222 Posts
As I understand it, you likely wouldn't throw a code immediately for something like a missing gas cap. The system is always checking and measuring certain parameters, building a history to compare against. That's also why it may take some time and a few ignition cycles to eliminate certain CEL codes as well (if the ECU is not manually reset).
 
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