UKSaabs

The site for UK Saab people!
It is currently Sat May 25, 2013 11:31 pm

View unanswered posts | View active topics


Board index » Saab » Workshop

All times are UTC



Forum rules


EXAMPLE- [Car Year][Car Model]: [Brief description of issue]

When you put a new thread up in the Workshop please put your car's year and model in the title, along with just a brief indicator of the problem.

Please also add as much information as you can about the problem, to your post.

This will help us to help you, without having to ask basic details such as what car you have.



Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 
  Previous topic | Next topic 
Author Message
Jules_ht
PostPosted: Tue Apr 21, 2009 9:57 am 
Offline
UKS Addict
User avatar

Joined: Wed Sep 13, 2006 12:44 pm
Posts: 7433
Location: Bristol
I've been getting a CEL recently, O2 circuit low voltage. I think it was P0102 but I've cleared the code a few times and now it's now not reappearing. Since it first happened my idle has been all over the place (and it still is), especially when cold. Am I looking at replacing the lambda probe, or is this fault to do with something else on the same circuit? I've tried another Lambda sensor and it was even worse.

Trying to boot it (i.e. going from open to closed loop) is problematic, and that's the last thing I need when I'm trying to tune it for Combe on Sat.

_________________
UKSaabs Fantasy Formula 1 Freak
Federation of Master Bodgers Accredited
T5 Tuner
Top
 Profile  
 
Mark E
PostPosted: Tue Apr 21, 2009 10:10 am 
Offline
UKS Addict
User avatar

Joined: Thu May 13, 2004 8:05 am
Posts: 4282
Location: Bedfordshire
Probably wasn't P0102 as that's for a MAF and yours is a T5 car?
Top
 Profile  
 
Jules_ht
PostPosted: Tue Apr 21, 2009 10:30 am 
Offline
UKS Addict
User avatar

Joined: Wed Sep 13, 2006 12:44 pm
Posts: 7433
Location: Bristol
Fair enough, cheers. The text of the code "O2 circuit low voltage" is correct though I'm pretty sure, I read it with my ELM.

_________________
UKSaabs Fantasy Formula 1 Freak
Federation of Master Bodgers Accredited
T5 Tuner
Top
 Profile  
 
rincewind
PostPosted: Tue Apr 21, 2009 12:00 pm 
Offline
UKS Addict
User avatar

Joined: Sun Apr 06, 2008 5:35 pm
Posts: 3001
Location: Leicestershire
have you tried checking the connector with a multimeter and also check the resistance from the o2 sensor? This way you can perhaps try and see if it is a wiring problem or a probe problem. check the voltage at the wiring connector, and i think the official saab procedure is, if not getting then correct voltage to "wiggle" the wiring harness in various places to see if there is any variation.

But i guess you need to know what voltage it should be receiving (possibly 5v??) and what the resistance of the 02 probe should be (no idea?).

_________________
http://www.topcashback.co.uk/ref/rincey
'55 9-5 aero silver
Theres nowt better than a pie sandwich
Top
 Profile  
 
Jules_ht
PostPosted: Tue Apr 21, 2009 12:06 pm 
Offline
UKS Addict
User avatar

Joined: Wed Sep 13, 2006 12:44 pm
Posts: 7433
Location: Bristol
rincewind wrote:
But i guess you need to know what voltage it should be receiving (possibly 5v??) and what the resistance of the 02 probe should be (no idea?).


Well yes, this is the rub- I have no idea which pins to test for what values.

_________________
UKSaabs Fantasy Formula 1 Freak
Federation of Master Bodgers Accredited
T5 Tuner
Top
 Profile  
 
Jules_ht
PostPosted: Tue Apr 21, 2009 1:20 pm 
Offline
UKS Addict
User avatar

Joined: Wed Sep 13, 2006 12:44 pm
Posts: 7433
Location: Bristol
Ha, CEL when I went out at lunch, but no laptop.

AFRs went from 14.7 to about 16, when they hit 18 I got a CEL. Switching off and on again reset both the CEL and the problem- back to stoich running.

_________________
UKSaabs Fantasy Formula 1 Freak
Federation of Master Bodgers Accredited
T5 Tuner
Top
 Profile  
 
saab23t
PostPosted: Tue Apr 21, 2009 3:19 pm 
Offline
Active user

Joined: Thu Feb 12, 2009 6:27 pm
Posts: 250
probably something that rear its ugly head in the future but P0102 is MAF which could and probably would give O2 sensor a false reading as they are linked to emission's
Top
 Profile  
 
Jules_ht
PostPosted: Thu Apr 23, 2009 11:51 am 
Offline
UKS Addict
User avatar

Joined: Wed Sep 13, 2006 12:44 pm
Posts: 7433
Location: Bristol
I've found a problem in my map and fixed it.

_________________
UKSaabs Fantasy Formula 1 Freak
Federation of Master Bodgers Accredited
T5 Tuner
Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 8 posts ] 

Board index » Saab » Workshop

All times are UTC


Who is online

Users browsing this forum: rich8000 and 6 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group

UKSaabs Twitter Updates

follow UKSaabs on Twitter



UKSaabs silhouette logo images by Mark Green www.greenphotos.com
"subsilver2" slightly bodged by UKSaabs for our own use.

:: Disclaimer ::
Comments posted here are the views of their individual authors and are not necessarily shared by the owners of this Web site.
Authors assume all responsibility for comments posted here.

UKSaabs The biggest and best privately owned UK based independent Saab forum for all SAAB enthusiasts.
Whilst we encourage our users to support our advertisers the site wishes to remain independent and therefore does not endorse any particular advertiser(s)
UKSaabs is not affiliated with Saab Cars UK or Saab Automobile AB