Go Back   Volvo Forums - Volvo Enthusiasts Forum > Volvo Vehicles > Volvo S70
Sign in using an external account
Register Forgot Password?
Search

Welcome to Volvo Forums!
Welcome to Volvo Forums,

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, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Volvo Forums today!


Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-02-2010, 05:41 PM
Member
 
Join Date: Feb 2009
Posts: 73
Default AC pressure sensor?

Hi

I just got CEL on my S70 this morning, 2 codes: p0446 (Evaporative emissions control vent circuit low) and p0531 (ac pressure sensor circuit performance/range).
- had a cracked "j hose" and i was hoping that replacing it would take care of first code but it didnt?! What else can trigger this code?
-I did search on second code and no luck. My ac works when I first turn it on and it shuts off after few minutes. I thought this means bad clutch on compressor? but this code for ac pressure sensor makes me wonder if its something else? Which sensor is this, where is it located?
Any help would be greatly appreciated
Reply With Quote
  #2  
Old 07-04-2010, 08:06 AM
tech's Avatar
Administrator
 
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,443
Default

1. Is any of the other hoses by the fuel filter cracked? If not the evap valve can stick sometimes.

2. It could be the high pressure switch located behind the passenger headlight.
__________________
1987 Ford mustang LX Coupe 5.0
1995 Yellow T5-RM running
1996 850 turbo
1994 N/A 5-speed wagon Purple (daughters)
Reply With Quote
  #3  
Old 07-04-2010, 08:26 AM
Member
 
Join Date: Feb 2009
Posts: 73
Default

Hoses were fine. Shut off valve was the problem. I replaced it. No more p0446 code.

I changed high pressure switch as well, nothing changed, i only have ac for first 5 minutes. I think i am going to replace ac compressor because clutch is probably gone and then see if code comes back.

thanks tech!
Reply With Quote
  #4  
Old 07-04-2010, 08:35 AM
tech's Avatar
Administrator
 
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,443
Default

To test the clutch to see if it is bad start the A/C and when it quits working check for power at the compressor. If you have power it is the clutch. If you have no power then it is something else.
__________________
1987 Ford mustang LX Coupe 5.0
1995 Yellow T5-RM running
1996 850 turbo
1994 N/A 5-speed wagon Purple (daughters)
Reply With Quote
  #5  
Old 07-04-2010, 05:31 PM
Member
 
Join Date: Feb 2009
Posts: 73
Default

I just did that. Clutch is bad. Thanks! Now i am sure i need new compressor.
Reply With Quote
  #6  
Old 07-04-2010, 07:27 PM
tech's Avatar
Administrator
 
Join Date: Sep 2004
Location: Orlando, Florida
Posts: 36,443
Default

If you are really handy you can reshim it. It is a pain but can be done.
__________________
1987 Ford mustang LX Coupe 5.0
1995 Yellow T5-RM running
1996 850 turbo
1994 N/A 5-speed wagon Purple (daughters)
Reply With Quote
Old 07-04-2010, 07:27 PM
 
 
 
Reply

Tags
850, ac, censor, defective, jump, p0531, performance, power, pressure, replace, sensor, switch, transducer, v40, volvo


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are On
Pingbacks are On
Refbacks are On


Advertising
Featured Sponsors
Vendor Directory
Our Sponsors

All times are GMT -5. The time now is 01:21 PM.
© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO ©2010, Crawlability, Inc.

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.
Secure Backup