First time poster here. Bought a 2010 Kluger Altitude AWD a few weeks back and am loving it so far. It is my first ever Toyota, with my other car being a BA Falcon XR6 Turbo. Located in ACT.
Back about a week ago, I got a CEL and VSC off on the dash. Initial code scan showed P0174 (Bank 2 lean) however now I am getting P0171 (Bank 1 lean as well). Have also noticed that fuel consumption has jumped by a couple of L/100. With the XR6 I try to do as much as I can on the car myself short of opening the engine or transmission, however given the relative newness and value of the Kluger, and our reliance on it for interstate trips, I'm intending to drop the oil at the 5k mark between services but in general keep the professional service history intact!
I'm also in the boat of trying to find a new mechanic as the several I have tried since moving to Canberra have been average - stripped diff plugs, wrong spark plugs installed, an inability to set the timing on the EL XR6 I has previously, not refilling brake fluid after removing some to machine rotors. I could go on!
So back to the issue - I'm keen to get any thoughts on this issue so that if it is a simple fix I can try it myself or at least I am more informed when I go to the mechanic. Info/my assumptions so far:
If I clear the codes, they come back within about 20km (presumably they stay off for a bit because they are referencing long term fuel trim)
Long term fuel trim readings on both banks is around 30, so its adding a ton of fuel to compensate for the issue
120k service on Friday - new mechanic tightened a few hoses to see if it helped. Service included new air filter. Problem persists.
I cleaned the MAF sensor Friday night, problem persists.
I am thinking in the intake leak direction as the code is coming on for both banks - if it was just one then an O2 sensor would be in the mix too but seems unlikely given both banks are lean.
Ditto blocked fuel injector - would be unlikely to impact both banks.
I guess fuel pump/filter/pressure reg could be an issue - should be simple enough to get the mechanic to check fuel pressure to the fuel rails
I did just find a small vac hose that was cracking at the ends. Didn't look like enough to be an issue, but swapped out for some new hose so will see if that helps. I'm a bit tempted to grab a couple metres of hose and just change them all. Bit surprised that most of the lines don't have clamps, but I guess on my other car some of them build positive pressure rather than just varying levels of vacuum. I've had a good dig around the various lines and on visiual inspection at least, everything seems in place and connected OK.
I wonder too re the intake manifold gasket - this was presumably changed when the spark plugs would have been done at 100k.
I should just let the mechanic do his job I guess, but if my intake leak assumption is reasonable, a smoke test is probably a good place to start.
Any thoughts or experiences you have most welcome! And thanks for the forum - was some good pre-reading while I was on the hunt for a Kluger.