PO171 code and traction light
 

1950 miles after the recall was done I got a PO171 code and the traction control light came on. Ever since the recall the car has had a weird idle dip to where the engine almost stalls. I got the big idle dip and the CEL and traction light came on. Drove home ,the car ran fine. I read the code with a OFT and cleared it. I started the car and it ran kinda rough. I figured I would log fuel mixtures today. Went to start the car this morning and it will not run. I plan on towing it to the dealer on Friday.
I was wondering if anyone knows what might be going on so I can talk intelligently to the service guy.

Well, THAT sucks - :(

I'd just let them know what code it threw and let them figure it out. Then they may tell you that you should have left the code so they could diagnose it better.

Oh, I'd start by looking for a vacuum leak - :iono:


humfrz

Yes as above


Vaccuum leak like hose on bottom of intake manifold or exhaust leak letting 02sensor see fresh air will do that. Since it now wont stsrt more likely intake leak. Could also be a bunch of other things like maf or 02 sensor bad


Also check the DI computer has all three bolts tight it box on side of motor, bots are how it get earth\ground .



https://www.autocodes.com/p0171_subaru.html