Service Advancetrac. Forscan shows U0401-20

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michiganave

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It took about 5 minutes to pull over safely and connect the laptop to get codes. Same U0401-20 under DTC. Ran self tests:

Nothing on ABS self test

Key on, engine on showed
P0505:00
P1464:00

Key on, engine off showed
P1464:00

The AC was running when I ran the tests, so I think the P1464 doesn't mean anything wrong?

P0505 is an idle air control system code?

Any thoughts? The vehicle threw the big WRENCH symbol but didn't go into limp mode today. Drove totally normally. I cleared the DTCs and will keep driving and see if I can pull codes faster when I get the error.
 
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