Welcome to the North American Subaru Impreza Owners Club Saturday October 31, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
Go Back   NASIOC > NASIOC Technical > Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo)

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.

* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Thread Tools Display Modes
Old 10-04-2020, 07:53 PM   #1
Scooby Newbie
Member#: 518966
Join Date: Sep 2020
2013 WRX
Dark Grey Metallic

Default Returning misfire code, 0V bank 1 O2 sensor

I'm dealing with this issue: https://forums.nasioc.com/forums/sho...2550077&page=2

And since the solder only worked for a few weeks I'd like help testing the continuity of the ignition circuit. (I couldn't find a wiring diagram in the service manual but if I missed it the page number let me know.) Do I check at the engine harness plug near the firewall? Is there a diagram that clearly shows the layout of that plug?

Additionally, the bank 1 O2 sensor is reading 0V at idle and while driving with my scan tool but with no engine light or code. It has 12V going to the plug. I measured resistance of the old sensor (which was bad) and have installed a new sensor but still no voltage on the scan tool. After replacing the sensor the fuse under the glove box blew causing p0031 p0037- fixed with new fuse. Again- wondering where I should check this circuit for continuity. It would seem that there's a short given that the fuse blew but since it hasn't blown again in 200 miles. Also I think the scan tool should see the voltage since it's getting power. The wiring looks neat and tidy.

I replaced two ground cables that had corroded off. There aren't any other chronic electrical issues. The previous owner installed an AEM cold air intake but otherwise the car is factory original and has not been tuned. It is in good condition with 135k. I paid my family mechanic to check compression, leak down, plugs, coils and even the turbo. They said it could need valve adjustment but didn't know whether having out of spec valves would cause a misfire code, that otherwise it didn't appear to have any problems and that it doesn't feel like it's missing.

It some times has trouble starting. There are periods of a few days where the car will idle rough and shudder and stall at stops.

Thanks for any help
* Registered users of the site do not see these ads.
SpencerRingwood is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.

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

All times are GMT -4. The time now is 12:48 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.