Welcome to the North American Subaru Impreza Owners Club Sunday July 25, 2021
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC General > Newbies & FAQs

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. 
Reply
 
Thread Tools Display Modes
Old 03-23-2021, 04:33 PM   #1
Bendik1704
Scooby Newbie
 
Member#: 523019
Join Date: Mar 2021
Default O2 sensor fault after changing sensor [P0030]

Hi, i have tried to find the cause of my fault code P0030 for some while with no luck. My car is a stock Subaru Impreza Outback 2003. My Problems started with getting engine light and the code P0032. I therefore checked to resistance in the old sensor which was ol so i concluded with a bad sensor and replaced it with the first universal o2 sensor i found i the store with the same amount of cables (4). I wired it up, but shortly after i got check engine light and the code P0030 (P0032 is now gone).

These are the things i have checked and i think is good:
1. The resistance of my new sensor which 5,5 ohm.
2. The ground of the connector to battery 13,8V
3. Power in connector to ground 13,9V (14,2 over battery)
4. Voltage between ground and power in the connector are 14v
5. I also tried flipping the two other cables that's not to the heater element - also with no luck

I there are no damages on the wire between the sensor and connector.

So what do you think this problem can be caused by?
Or do you have any tips to investigate this further?

Best regards
* Registered users of the site do not see these ads.
Bendik1704 is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 03-23-2021, 09:48 PM   #2
AliBenn
Scooby Guru
 
Member#: 487
Join Date: Nov 1999
Chapter/Region: TXIC
Location: Greatwood/Sgrlnd
Vehicle:
1998 /2005 STunIcorn
Acadia Green RS-T

Default

Second code

https://www.engine-codes.com/p0032_subaru.html

First code

https://www.engine-codes.com/p0030_subaru.html

Im sure no burnt/crimped wire as u described.....especially since you bench tested ohms
(You bad ass)
I hate these issues with a passion
Im guessing here
But
It isnt an issue with the AM sensor but with wires
Specifically, the solder used to connect the OE pigtail
Think of it like a Yellow Air Bag harness
ANY slight variation of current, will not fire bags.
Thats why manufacturers mandate NOT to repair AB harnesses
Im thinking same thing occurring
Especially since code actually changed
Let us know what happens plz
GL
AliBenn is offline   Reply With Quote
Old 03-24-2021, 11:19 AM   #3
Bendik1704
Scooby Newbie
 
Member#: 523019
Join Date: Mar 2021
Default

Quote:
Originally Posted by AliBenn View Post
Second code

https://www.engine-codes.com/p0032_subaru.html

First code

https://www.engine-codes.com/p0030_subaru.html

Im sure no burnt/crimped wire as u described.....especially since you bench tested ohms
(You bad ass)
I hate these issues with a passion
Im guessing here
But
It isnt an issue with the AM sensor but with wires
Specifically, the solder used to connect the OE pigtail
Think of it like a Yellow Air Bag harness
ANY slight variation of current, will not fire bags.
Thats why manufacturers mandate NOT to repair AB harnesses
Im thinking same thing occurring
Especially since code actually changed
Let us know what happens plz
GL
Hi, and thanks for your reply. But i didn't understand your answer completely (english is not my first language) and have therefore some questions.
1. You say AM sensor, is that the same as the o2 sensor?
2. Do you mean the "solder used to connect the OE pigtail" is the cause of the problem, or is not?
3. And i didn't understand anything of this:

"Think of it like a Yellow Air Bag harness
ANY slight variation of current, will not fire bags.
That's why manufacturers mandate NOT to repair AB harnesses"

I will post some more questions under this.
Bendik1704 is offline   Reply With Quote
Old 03-24-2021, 11:30 AM   #4
Bendik1704
Scooby Newbie
 
Member#: 523019
Join Date: Mar 2021
Default

I did some more "investigation" today. Just to be sure i checked that there was going current through the heater element in the sensor, wich it did. About 12V when engine was running. After tried to gather more information through the Torque app. The app had no information or data on the o2 1 sensor, bit did have on the o2 sensor 2 (behind cat). Ill post some screenshots of that under here in case that will help.

https://img.nasioc.com/image/hmXMs
https://img.nasioc.com/image/hmKAI
https://img.nasioc.com/image/hmjR1
https://img.nasioc.com/image/hmlJb
Bendik1704 is offline   Reply With Quote
Old 03-28-2021, 04:51 PM   #5
AliBenn
Scooby Guru
 
Member#: 487
Join Date: Nov 1999
Chapter/Region: TXIC
Location: Greatwood/Sgrlnd
Vehicle:
1998 /2005 STunIcorn
Acadia Green RS-T

Default

NP.

1. AM = aftermarket
2. Yes the solder(my guess) is the issue
3. Airbag harnesses are safety related
Manufacturers do no permit ANY repairs to the wires
This might be reason your soldered O2 sensor harness is still throwing a code
AliBenn 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

All times are GMT -4. The time now is 02:54 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2021 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.