33k and the trouble begins(Final update=Spoke too soon)
 

I've had my car for just over two years without a single running issue. Not even a noticeable idle fluctuation. Saturday morning heading to a golf course, CEL and SL lights came on. Of course my heart sank and I decided to drive 5 under the speed limit to the golf course. Being bothered by car perils, my golf game suffered until my mind became eased by a few beers. Came home, plugged in my scanner and found P0171, P117B and P219A codes. Great. Start poking around under the hood, looking for anything relevant to have been knocked loose. I'm completely stock aside from a cat-back exhaust, so mods aren't an issue. I'm taking my beloved to the dealer in the next couple days, depending on when my boss let's me have off. I apologize for the drawn out story, but not really. I've searched the forums and haven't seen much of a consensus of what typically causes issues like this. I'm more just putting forth a starting point for my issues in hopes that it may provide relevance to some poor sap in the future. Will update with any new information.

UPDATE 10/5/2015:I've had my car back for nearly a week now. As it turns out, my drivability issues resulted from the Direct Injection control module not communicating with the throttle position sensor properly. This, in turn, fouled the direct injectors causing them to not spray correctly. The dealership ended up replacing all four injectors and the control module. All in all, I'm happy now that I have my car back and I'm even happier to report that she's running like the day I bought her.

UDATE 11/3/2015: Yesterday I dropped my car back off at the dealer after CEL and skid light came back on. Ran the codes, They are as follows: P0301, P219A, P119E and P0171 is pending. I got a call from the new service manager and he informed me that they submitted the issue to TechStream. They responded and advised them not to touch the car any further and they were going to schedule an engineer to come out and look at the car and help to troubleshoot the cause of the problem. As it stands, all of the codes that I've seen in the past 2 months are as follows: P0171, P0301, P117B, P119E, P119F and P219A. I'm hoping for a thorough explanation and a timely repair.

All those code related to air fuel ratio could be heaps of things
intake or exhaust leak or dirty maf sensor or o2 sensor fault ect, rearly bad batch of fuel

even check battery volts dying batteries can cause weird issues

dealer will sort it thogh its under warantee


Subaru codes here
http://www.romraider.com/RomRaider/C...gineLightCodes

I appreciate the input, I've looked into most of those things. I'm limited on my diagnostic abilities and took it to my buddy's shop earlier in hopes to get a scanner on it to see what the sensors and whatnot were doing. As it turns out, they lost the keys for the scanner which has all of the Japanese manufacturers on them. Was hoping to narrow it down to a few possibilities. Battery tested out fine and system voltage is above 14.1V. I guess I'll just have to be patient until I get her to the dealership.

Maybe your car was just having a bad day ...... like your golf game ......:(

I'd suggest you check/clean the air filter; fill up with hi-test gas from a different station; erase the codes; have a short beer ...... then take it for a drive to see if the code(s) return.

If they return, have a couple more beers and let the dealership sort it out ... :)


humfrz

I've done all of that, including a multitude of beers, except replacing the gas. I freaked out Saturday when I was at half a tank, filled up from my usual gas station and didn't think that maybe running it down to 1/4 tank was going to make much of a difference. Currently back down to half a tank with no change. Going to be filling up in the next day or two. I drive a ton and I've got two more rounds of golf to play this week. More beers!:cheers:

So, did the codes come back after you erased them ..... ??


humfrz

They've come back every time since they've started. Air filter is brand new, oil has been changed 1500 miles early to eliminate other possible variables.

Hmmmm.......... I reckon it's time for a dealer visit.

Good luck!

humfrz

If you buy a cheap ELM327 blutooth obd adapter and have an andriod phone or tablet download the torque app or obd dash and you can monitor sensors read codes and clear codes the app and blutooth adapter will be less than $20

That's what I have and what I've been using to pull codes. Not really sure where sensors should be reading at what point, but at idle, it seems like engine load is ridiculously high.

Just how new is that filter? Did you maybe not seat it right and air is leaking around it?

Brand new Sunday. Removed the entire intake and reassembled to ensure everything was right. Besides, if it's before the MAF sensor, wouldn't it still register the volume?

Sounds like an issue with the MAF or O2 sensors. At least both of those are easy to replace. Good luck at the dealer!

Thanks. Seems like a toss up to me without knowing what output ranges are supposed to be for either. I just hope it's not something stupid I've over looked.