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Unread 02-24-2018, 10:53 PM   #1
esb_t4r's Avatar
Join Date: Aug 2009
Location: El Segundo, CA
Posts: 114
Default P1445 & Low Idle RPM Question

Hi 4Runner friends,

'05 V8 with 97K miles -

The CEL along with the VSC/traction lights came on last Thursday as I was leaving work. There was no noticeable change in performance however with the exception of the engine RPM idling quite low while in gear (~450 RPM).

I tightened the gas cap and the CEL stayed on. Then got the code read Friday (P1445, Secondary Air System related), and the CEL/VSC lights have been OFF since, however the car is still idling at around 450 RPM.

I did notice also that the A/C was not working at idle, but would kick in once I started driving - could this be a secondary issue due to the RPM? I put a new battery in the car a few months ago as well fwiw; However I did drive with the old battery which was definitely bad and required daily trickle charging for probably about four months and probably strained the alternator (stupid, I know).

I've never had any issues mechanically with the engine and drive it pretty easy. I did just change the spark plugs around 95K miles, and the idle RPM was low after I did that for a day or two, which I read may have been due to unplugging the MAF when I removed the airbox to change the passenger side plugs. It did return to normal after the spark plug job and has been fine ever since.

Anyone have any thoughts? Any troubleshooting suggestions would be greatly appreciated. I did not see much on this forum related to the P1445 code.

-2005 V8 4x4
-Downey Lift
-K&N intake & Magnaflow
-BFG A/T KOs 265/70
-2007 JBL Synthesis w/iSimple ipod adapter
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