08 4run V-6 Check Engine, TRAC, AND/OR VSC On P0441 DTC and P0455 DTC

BADCUDA1

Member
08 4run V-6 Check Engine, TRAC, AND/OR VSC On P0441 DTC and P0455 DTC

I know it's been posted just thought I would start a new thread. Move it if you feel the need.

About a month and 2.5 tanks of fuel since I had these codes appear. Reset and within three cycles on average on cold start the code would reset. After the third reset within about week I felt it was a hard code.

After digging here and on the net found a TSB (Sorry forget the number) and basically stated to start with a fuel cap OEM a must. So I did.

Since then no light! COOL DEAL I feel it's fixed.

FYI: During the info dig I found an explanation on the self test which only will occur after 5 hours (key word about) shut off. The evening I replaced the cap I went out to the garage and it was quiet in there no noise other than a hmm from the rear of the runner. I listened a moment and figured it was the self test going on the EVAP system. I opened the gas cap door and removed the cap with a wooosssshhhh! Cool system was holding pressure. Replace the cap and cycled the key. Just thought I would relay that info.

1 month and 800+ miles and counting no lights! :bravo:
 
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P0441- EVAP System Incorrect Purge Flow
P0455- EVAP Gross Leak Detected

Are two common DTCs set by the gas cap being removed. The purge valve will not detect flow because there's too large a leak (as indicated by the other leak which means a leak over .040" has been detected.)

Mentioned in this thread as well. :)
http://www.toyota-4runner.org/4th-gen-t4rs/151487-check-engine-trac-vsc-read-me.html

Congratulations on fixing the issue and starting by pulling DTCs before guessing.
 

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