Welcome to the North American Subaru Impreza Owners Club Thursday April 24, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Factory 2.0L Turbo Powertrain

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 08-18-2009, 04:04 PM   #1
dehsiung
Scooby Newbie
 
Member#: 200224
Join Date: Jan 2009
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2014 WRX 5dr ordered
WRB

Default cel p0103 and p0113 - input?

parked overnight and the next day it was throwing a cel. i pulled P0103 Mass air flow sensor circuit high input and P0113 Intake air temperature sensor circuit high input.

starts up, idles and runs fine without any major issues that i could tell. from a quick search it seems like it could a MAF problem, possibly loose or needs a cleaning?

haven't gotten a chance to take a look yet, but anyone have similar problems where it was fine one day and all of a sudden the cel goes on with these codes? i've read somewhere that wet weather could cause this to happen, but it's been sunny the past 3-4 days with no rain (90's and humid here in jersey). the car is a 2004 wrx wagon, stock with 82k on the clock.
dehsiung is offline   Reply With Quote
Old 08-19-2009, 11:14 PM   #2
dehsiung
Scooby Newbie
 
Member#: 200224
Join Date: Jan 2009
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2014 WRX 5dr ordered
WRB

Default

update: cleaned the MAF, no change in the CEL - is the MAF busted and should I look into picking up a new one?

i did notice the car idling at around 1000 and would drop down to about 700-800 and then rumble back up to 1000. is this normal?
dehsiung is offline   Reply With Quote
Old 08-20-2009, 01:59 AM   #3
yellowsubi
Scooby Newbie
 
Member#: 209161
Join Date: Apr 2009
Chapter/Region: BAIC
Location: San Jose, Ca
Vehicle:
ohhh four STi
mmm Forged!!

Default

sounds like a bad maf to me. But it could be other things. Before you blow money on a new maf, if you have a friend in the area, swap his maf in there and see if theres a difference.

Im from jersey but not there now ... but theres plenty of people on nasioc from the garden state if none of your friends are driving a suby
yellowsubi is offline   Reply With Quote
Old 08-20-2009, 03:59 AM   #4
down_for_the_scooby
Scooby Specialist
 
Member#: 78314
Join Date: Dec 2004
Chapter/Region: Tri-State
Location: 3 feet south of E. Bumblef***
Vehicle:
04 PSM WRX
Audi mask the right way

Default

This sounds an awful like what is happening to me. Upgraded to stage 2 and reflashed using accessport V2. I now have a low idle, throwing codes that say I'm misfiring on cylinder 3 and 4 and no clue how to fix them. Could it be a plug thing??
down_for_the_scooby is offline   Reply With Quote
Old 08-20-2009, 04:55 PM   #5
dehsiung
Scooby Newbie
 
Member#: 200224
Join Date: Jan 2009
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2014 WRX 5dr ordered
WRB

Default

alright so i just reset my ECU - pulled the negative, pumped the brakes until residual power was gone, and replugged my battery. theoretically this should take off the CEL and it shouldnt come back on until afterwards (driving around for a little while) correct?

however, as soon as i started her up the CEL was on steadily. haven't found anyone to swap MAFs yet though. probably gonna ask one of my friends when he gets back from the beach.. lawl.

could this be something other than the MAF?
dehsiung is offline   Reply With Quote
Old 08-20-2009, 04:59 PM   #6
Haelan
Scooby Specialist
 
Member#: 151045
Join Date: Jun 2007
Location: NW Indiana
Vehicle:
2013 Subaru STI
CBP

Default

Quote:
Originally Posted by dehsiung View Post
could this be something other than the MAF?
Re-seat the electrical connector for the MAF sensor. You can also check the wiring plug at the ECU end as well to make sure it isn't loose.
Haelan is offline   Reply With Quote
Old 08-21-2009, 04:24 AM   #7
yellowsubi
Scooby Newbie
 
Member#: 209161
Join Date: Apr 2009
Chapter/Region: BAIC
Location: San Jose, Ca
Vehicle:
ohhh four STi
mmm Forged!!

Default

+1 for the guy above me, could most definately be an electrical problem with the connection to the maf.

Do you have any friends with a maf you can swap in to check it out?
yellowsubi is offline   Reply With Quote
Old 08-21-2009, 08:21 PM   #8
dehsiung
Scooby Newbie
 
Member#: 200224
Join Date: Jan 2009
Chapter/Region: Tri-State
Location: New Jersey
Vehicle:
2014 WRX 5dr ordered
WRB

Default

already checked the plug to the MAF, didnt fix the problem. havent checked the connection to the ECU yet. waiting for my friend to get back to swap out the MAF. thanks to everyone for the input
dehsiung is offline   Reply With Quote
Old 08-22-2009, 03:55 PM   #9
Haelan
Scooby Specialist
 
Member#: 151045
Join Date: Jun 2007
Location: NW Indiana
Vehicle:
2013 Subaru STI
CBP

Default

Quote:
Originally Posted by dehsiung View Post
already checked the plug to the MAF, didnt fix the problem. havent checked the connection to the ECU yet. waiting for my friend to get back to swap out the MAF. thanks to everyone for the input
I saw another thread on here about a guy that found a broken fire inside the electrical harness plug. If it is the ground wire the voltage can float and easily trigger your codes.

It looked as if the plug was forced on and in the process pushed the copper pin out through the back. Worth a look. You may need to ohm out the pins back to the ECU plug if the MAF swap doesn't help.
Haelan is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
P0102 and P0113 CELs KB21 Newbies & FAQs 8 11-11-2008 11:02 AM
swapped to modified deatschwerk injectors - now CEL codes p0103 and p0113? anthonyrb98 Factory 2.0L Turbo Powertrain 5 11-23-2006 03:07 PM
cel p0103 what to do? ted@mb Factory 2.0L Turbo Powertrain 1 10-16-2006 04:54 PM
CEL P0103 and loose hoses (image heavy) WRXtranceformed Service & Maintenance 13 01-20-2006 11:50 AM
Cel P0103 jskho Service & Maintenance 8 05-05-2005 10:47 AM


All times are GMT -4. The time now is 11:51 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.