4runner codes p0104 p0456 VSC on/off, VSC Trac, Traction Control and CEL
I just sold my 4Runner to my brother in law that was running great. Of course, just after he got it the VSC on/off, VSC Trac, Traction Control lights came on. No CEL and no codes. We replaced the gas cap with a new OEM one.
Now about 2 weeks later the CEL has come on and it has codes: p0104 Mass Air Flow (MAF) Circuit Intermittent p0456 System Small Leak – Evaporative Emission System I am not sure what else to do here. ANy suggestions? |
Do a search, but its likely that he needs a new gas cap. Go to the dealer and buy a brand new 24 dollar cap, install it, clear the codes and see if that fixes the issue. could be something else but more often than not the p0456 code is the cap or more specifically the o-ring inside the cap that's gone bad.
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Now more are there after replacing the gas cap and trying to clear the lights. |
Sounds dumb but.... Is he screwing the cap down so that it clicks a few times?
If not that'll be the cause. |
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