|
Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs |
|
Thread Tools | Search this Thread |
05-25-2015, 02:28 PM | #1 |
Senior Member
Join Date: Jul 2012
Drives: 2013 FR-S
Location: Anytown
Posts: 920
Thanks: 73
Thanked 643 Times in 302 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
|
P0451
Keep getting this infernal code and can't figure out why.
Mods KW C30 kit Skunk2 Header OP/FP/CBE Clamped the vacuum hoses under the intake but I'm still getting the code generally after I drive a bit and park the car come back and the DTC is there. Any suggestions would be greatly appreciated. |
05-25-2015, 03:00 PM | #2 |
Senior Member
Join Date: Dec 2011
Drives: 2013 Subaru BRZ Limited
Location: Orange County, CA
Posts: 935
Thanks: 525
Thanked 399 Times in 255 Posts
Mentioned: 23 Post(s)
Tagged: 2 Thread(s)
|
There is a thread on this code with multiple fixes including gas cap, hose clamping under the manifold (guess you can rule that one out), and determining if it's tune based.
Have you tried flashing back to stock and driving around below boost in low rpms for a few days? You could temporarily remove your cogged belt if you want to check the higher rpms as well. If it doesn't come up, the issue might be the MAF. I think you could also try switching MAFS with a buddy and seeing if it goes away for you and pops up for him. That would expose the sensor as an issue but not if it's related to leak at certain rpms.
__________________
Setup 1: KW C38, Grams 550, Grams 265, 4bar, FlexFuel, Delicious
Setup 3: JR C30, DW 700, Grams 265, 3bar, FlexFuel, Moto-East Setup 4: JR C30 HBP, DW 700, Grams 265, 3bar, FlexFuel, Church Setup 5: JR C30 HBP, DW 700, DW 300, 3bar, FlexFuel, Delicious, Built Motor Setup 6: JR C30 HBP, DW 700, DW 300, 3bar, FlexFuel, Delicious, Closed Deck Built Motor |
The Following User Says Thank You to SPCorBUST For This Useful Post: | FirestormFRS (05-25-2015) |
05-27-2015, 10:30 AM | #3 |
Senior Member
Join Date: Feb 2013
Drives: 13 BRZ Limited WRB
Location: Fargo, ND
Posts: 723
Thanks: 17
Thanked 296 Times in 195 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
I am also throwing this code. I Just swapped in a used FA with 8k on it after I blew up mine. Nothing special, 3bar MAF, 'stock' perrin Vortech Tune, and Radium Catch Cans.
Ran the exact same setup for an entire year on previous engine, and double checked all connections and hoses. Nothing changed with my filler cap - haven't gotten gas for over a month (Car sat for about 3.5 weeks while I dealt with engine crap) Any ideas would be helpful. Thanks!
__________________
I plan to live forever. So far, so good.
My Build - http://www.ft86club.com/forums/showthread.php?t=31925 |
05-27-2015, 01:05 PM | #4 |
Senior Member
Join Date: Aug 2012
Drives: Scion FR-S
Location: Manchester, CT
Posts: 310
Thanks: 45
Thanked 32 Times in 26 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
|
I got the same code when installed my Kraftwerks SV kit, just got tune update and hope no code again
|
11-11-2015, 06:25 PM | #5 |
Member
Join Date: Oct 2014
Drives: BRZ Limited
Location: Joplin Missouri
Posts: 84
Thanks: 19
Thanked 5 Times in 5 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
|
I am working with oft for a tune right now but, I still get it with my vortech v3.
|
11-11-2015, 07:14 PM | #6 |
Senior Member
Join Date: Feb 2013
Drives: 13 BRZ Limited WRB
Location: Fargo, ND
Posts: 723
Thanks: 17
Thanked 296 Times in 195 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
Yea i cleared it and it comes on once a month or so, maybe. Header related is my guess
Sent from my HTC6525LVW using Tapatalk
__________________
I plan to live forever. So far, so good.
My Build - http://www.ft86club.com/forums/showthread.php?t=31925 |
06-14-2016, 06:03 PM | #7 |
Member
Join Date: Apr 2014
Drives: BRZ
Location: MA
Posts: 68
Thanks: 3
Thanked 15 Times in 15 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
|
06-14-2016, 08:50 PM | #8 | |
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)
|
@'
Quote:
Do you guys have flex fuel kits or aftermarket wideband 02 sensors using evap input to ecu if so get your tuner to disable P0451. As the evap sensor input has been re purposed It just an emmissions code so just disable it , but it does indicate you have an leak in evap emmisions system or a stuffed evap sensor or the plugs loose or similar. If your not running a tune thats repurposed the evap input, but its not needed for engine running. but will cause you grief at an emmissions readyness check |
|
06-14-2016, 09:46 PM | #9 | |
Senior Member
Join Date: Feb 2013
Drives: 13 BRZ Limited WRB
Location: Fargo, ND
Posts: 723
Thanks: 17
Thanked 296 Times in 195 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
Quote:
I have no aftermarket fuel system changes, I do have catch cans though. but yea, i just clear it and it will stay off for 1 to 2 months.
__________________
I plan to live forever. So far, so good.
My Build - http://www.ft86club.com/forums/showthread.php?t=31925 |
|
06-04-2017, 01:21 PM | #10 |
Senior Member
Join Date: Nov 2011
Drives: 2013 Firestorm FR-S
Location: Houston
Posts: 506
Thanks: 18
Thanked 77 Times in 64 Posts
Mentioned: 10 Post(s)
Tagged: 0 Thread(s)
|
I have the moto-east flex fuel kit and I keep getting this code. I presume I need the tune adjusted to turn this feature off? Car seems to drive fine. Any issues with driving or logging with this code?
__________________
2013 Firestorm FR-S, MTX, build date 1/13.
|
05-02-2023, 11:56 PM | #11 |
Member
Join Date: Nov 2022
Drives: 2014 Subaru BRZ (JSRC)
Location: California
Posts: 15
Thanks: 1
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
I recently fixed this problem on my supercharged BRZ. The problem for me was I installed a 11 BAR map sensor and the carb legal tune did not have its MAP scaled to the correct bar. A proper tune with the correct scaling fixed the code.
|
|
|
Thread Tools | Search this Thread |
|
|