|
Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs |
|
Thread Tools | Search this Thread |
10-01-2015, 02:42 PM | #1 |
Senior Member
Join Date: Jun 2015
Drives: 2015 FR-S Release Series 1.0
Location: CT, USA
Posts: 185
Thanks: 228
Thanked 91 Times in 47 Posts
Mentioned: 3 Post(s)
Tagged: 1 Thread(s)
|
Evap Emissions Purge Flow CEL
I recently installed the Crawford Power Blocks on my 2015 FR-S. During the installation I did not realize that I had disconnected the PCV vent hose and when I attempted to start the engine post install, the engine stalled due to the vacuum leak. I found the source of the leak, and reconnected the hose to the PCV valve outlet and clamped both the valve and intake sides to ensure it was sealed. The engine started after that with no issues.
However, a few days later the CEL/SL showed up. The DTC codes P0441 and P0455 were stored, indicating a large leak in the evap purge system pressure. I checked the PCV and CCV hoses again and made sure everything was clamped and sealed properly and cleared the codes. The engine runs without issue, however every 2-3 days since then (for about 3 weeks now) both codes have reappeared. I've been content with clearing them as a short term fix, however I obviously would like to fix the underlying issue so that I don't damage the fuel system. Other than the power blocks, I have an Injen Intake, Openflash Header, and TRD exhaust, as well as the OFT Stage 2 UEL AT tune. I had to pull on the intake assembly pretty hard to get the power blocks in but I've checked all the sensor connections around the manifold and everything seems to be fine. Techinfo has a document specific to the P0441 code, but I don't have a subscription. If anyone can get this, I would be in their debt. Sorry for the lengthy post but I would GREATLY appreciate any help on how to diagnose/fix this issue. |
10-01-2015, 11:55 PM | #2 |
Senior Member
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,937
Thanks: 28,899
Thanked 31,954 Times in 16,478 Posts
Mentioned: 709 Post(s)
Tagged: 2 Thread(s)
|
hmmmm.........interesting mods .......
Now, are you absolutely sure that the one of the "O" rings didn't slip out of one of the power blocks grooves when you installed them .... ?? You might re-check the bolts to see if they are still tight ...?? http://www.motoiq.com/MagazineArticl...d-Spacers.aspx humfrz |
10-02-2015, 12:41 AM | #3 |
Banned
Join Date: Dec 2013
Drives: FT86
Location: Australia
Posts: 7,998
Thanks: 1,035
Thanked 4,987 Times in 2,981 Posts
Mentioned: 598 Post(s)
Tagged: 2 Thread(s)
|
When you google engine codes add the manufacturer in search eg "P0441 subaru" as some codes are manufacturer specific.
check fuel cap is tight, check the evap canister hoses http://engine-codes.com/p0441_subaru.html http://engine-codes.com/p0455.html Possible causes - Missing Fuel cap - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - Incorrect fuel tank vacuum relief valve Read more: http://engine-codes.com/p0441_subaru.html#ixzz3nNl55ZQI Possible causes - Missing or loose fuel cap - Incorrect fuel filler cap used - Fuel filler cap remains open or fails to close - Foreign matter caught in fuel filler cap - EVAP canister or fuel tank leaks - EVAP system hose leaking - Fuel tank leaking |
The Following User Says Thank You to steve99 For This Useful Post: | avishenoy1 (10-02-2015) |
10-02-2015, 09:33 AM | #4 | ||
Senior Member
Join Date: Jun 2015
Drives: 2015 FR-S Release Series 1.0
Location: CT, USA
Posts: 185
Thanks: 228
Thanked 91 Times in 47 Posts
Mentioned: 3 Post(s)
Tagged: 1 Thread(s)
|
Quote:
Quote:
|
||
04-30-2020, 09:47 PM | #5 | |
Junior Member
Join Date: Jan 2018
Drives: 2014 scion fr-s
Location: Downey
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Quote:
|
|
05-01-2020, 06:22 AM | #6 |
Professional Mechanic
Join Date: Apr 2010
Drives: 2017 86 6MT Oceanic
Location: Quebec, Canada
Posts: 789
Thanks: 17
Thanked 633 Times in 371 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
Always always always start with checking your work.
441 happens when its purging the evap system and it doesn't see the pressure change in the tank, 451 happens when it tries to use its little vacuum pump to test the system and it can't get the pressure to drop. The sealed part of the system is from the vent sol to the purge sol under the intake. You had to tug pretty hard in the intake you say? Hmmmmm... |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
EVAP LINES..build dates? | nickmerronesucks | Forced Induction | 4 | 08-04-2015 10:22 AM |
DIY clamping the evap vacum ports under the manifold!! | charged86 | DIY (Do-It-Yourself) Guides | 9 | 04-08-2015 06:56 PM |
removing purge valve | blown | Engine, Exhaust, Transmission | 0 | 01-30-2015 03:45 PM |
Canister purge solenoid | aero.kit | Engine, Exhaust, Transmission | 1 | 08-31-2014 02:19 PM |
EVAP Solenoid | Ryan P | Forced Induction | 0 | 06-25-2014 08:43 AM |