This is a discussion on 2013 WRX P0451 Code Evap Emission Control System within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Originally Posted by TryNotToWRXit Will do. I didn't get a call today and if I don't receive a call by ...
I called the dealer today. Bringing my car in Thursday/Friday. I believe it is only to gather info to send off to Subaru.
Hi all! First time poster here, but I’ve been on NASIOC for a while. Oddly enough, nobody there went into as much detail on their dealings with this issue. Here’s my background:
I picked up my 2012 WRX in December of 2011. I change my oil regularly every 7,500 miles with Mobil 1 5W-30 full synthetic. I always put in 93 octane fuel from Mobil, Shell, or BP and make sure that the gas cap has been clicked 2 to 3 times. I don’t really push my car hard outside of some occasional spirited driving, but I drive an average of 85 miles per day. The car is completely stock outside of my winter tires/wheels that I use from November through April/May. Ever since I got the car, I always noticed a slight shudder that occurred intermittently while idling – I would say that it almost felt like a gust of wind hitting the car every few seconds. My other friends with Subarus mentioned having that as well, so I didn’t pay it much mind. Here’s my run-down of my issues:
-5/20/13 (~44,700 miles): My car’s CEL appeared. I immediately took it to the dealership and they said that it was a misfire on cylinder 1 (I’m assuming the code was P0301). They cleared it and told me to bring the car in again if the light reappeared.
-7/26/13 (~50,000 miles): Right after I started the car in the morning, I noticed my RPM gauge was oscillating a bit and the car felt rough while idling. I turned the car off, then on again, and the CEL appeared. I took it to AutoZone and it threw P0301 through P0304 – misfire on all four cylinders. The light persisted for a few weeks, so I made an appointment to take it in on 8/20, but on 8/19, the CEL cleared itself.
-8/20/13 (~52,500 miles): One day after clearing itself, the light came back on. This time, I was on my way home and stopped at a light. The car was sufficiently warmed-up since I had been driving for about 30 minutes. Just before the light appeared, the car began idling rough, so I gave it some gas to see if that would smooth it out. Only after the CEL appeared did the rough idling stop. Since there was an AutoZone on my way home, I got the codes read again: P0301 through P0304 and P0451.
I’m going to make an appointment to bring it in next week and I will report back my findings here.
Side note: I had to have the hose from the intercooler to the throttle body replaced because it came loose at 39,000 and 48,600 miles. I’ll have them check it again.
...By the way - holy cow... you drive that car a lot, ha.
Haha... yeah. That's part of the joys of being in the Chicagoland area and working in pharma or medical devices. If you want to live or just spend a lot of time in Chicago proper, be prepared to drive a TON since all those companies are in Lake county.
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My car has not thrown any codes, but I've noticed mine has a rough idle as well. Some people on this forum told me it was probably normal, but from the experiences on this thread, perhaps not so much. I have 1300 miles on my '13 hatch, but the rough idle has been going on since right around 200 miles. Car is completely stock, and proper break-in followed for first 1k miles. The idle feels like a bunch of inconsistent "mini-misfires", nothing too crazy, but definitely noticeable. Only during idle, nothing during driving...
**Stink-Eye Mob Member #96**
2013 Rex Hatch Rally Blue
Crying over money spent on this car and my obsession with hi-fi/ audiophile goodies
"I would buy that car if I was the sort of person who looked at my sister and thought, mmmmmm." -Jeremy Clarkson, referencing the Ford Mustang
Mine has the same idle problem it has 3,300 miles on it. I too noticed it at low mileage. No codes funny thing if I reset my ecu it idles smooth until the timing and fuel tables recalibrate. Seems that my TP stage tune has smoothed out my idle we will see have not run a full tank of gas through it yet.
Just thought I would throw an update to this thread. My car has officially thrown a code as of last night . I'm unsure what code it is because I've yet to get it read somewhere, but I'm just going to call the dealer tomorrow Morning and see if they can't squeeze me in to see what is going on. I will say on start up, I had another crappy idle and then I drove about 6 miles and stopped the car for about 30 minutes. Got back in and started her up, and bam... CEL. I'm almost hoping that its the same code you guys are getting so I can at the very least have a thread (this one) I can print out and show what is going on to the tech(s) I talk to about it. I'll keep my issue updated.
Edit: Forgot to mention, I'm officially at 2,765 Miles...haven't even done my first oil change on the car!
Hey all, sorry for the update delay. The dealer had my car for four hours on Friday. Final word was that the issue was caused by a faulty intake temperature sensor. They have one on order and it should be in this week. Once its installed I'll post back after a few hundred miles to see if the CEL truly went away.
Just got back from the Dealer and It was the P0451 code! So I get to wait for a call from the head technician tomorrow who is going to get into contact with SOA engineers to find out what to do. I also found out that apparently there is 1 WRX and 1 STi sitting on the lot with the same problem with less than 3k miles on them both. I really hope they figure out the problem...