what is 1129? - Land Rover Forums - Land Rover Enthusiast Forum

Discovery II Talk about the Land Rover Discovery II within.

what is 1129?

Reply

 
 
 
  #1  
Old 09-27-2009, 04:23 PM
JBEGIN's Avatar
Senior Member
Thread Starter
Join Date: Apr 2008
Location: Latham, NY
Posts: 509
Thanks: 0
Thanked 0 Times in 0 Posts
Default what is 1129?

im running rough at idle and have a lot of codes, and the newest one is 1129... anyone know what that is?
 
Reply With Quote
  #2  
Old 09-27-2009, 04:30 PM
Senior Member
Join Date: Oct 2008
Posts: 3,106
Thanks: 0
Thanked 0 Times in 0 Posts
Default

That's an interesting one:

P1129 O sensors swapped bank to bank (sensor 1) Front sensors transposed
 
Reply With Quote
  #3  
Old 09-27-2009, 04:35 PM
JBEGIN's Avatar
Senior Member
Thread Starter
Join Date: Apr 2008
Location: Latham, NY
Posts: 509
Thanks: 0
Thanked 0 Times in 0 Posts
Default

meaning that they are in the wrong place? ive noticed that on one side the sensors look the same... i thought it wasnt possible to have the fronts in the rear/ vice versa?
 
Reply With Quote
  #4  
Old 09-27-2009, 08:33 PM
Senior Member
Join Date: Oct 2008
Posts: 3,106
Thanks: 0
Thanked 0 Times in 0 Posts
Default

The connectors on the front and rear are physically different so you are correct it would be hard to switch them unless they are the universal kind of O2 sensors where you splice on your own connector. I'm not even sure how the computer would know that sensors are switched bank to bank. Unless they mean front to rear.
 
Reply With Quote
  #5  
Old 09-28-2009, 09:32 AM
Disco Mike's Avatar
Administrator
Join Date: Apr 2006
Location: Denver, Colorado
Posts: 25,710
Thanks: 0
Thanked 48 Times in 38 Posts
Default

1129 is a weird code that makes no since at all, as already mentioned the connections are different front to rear and it doesn't make a difference with the front 02's which are the same.

Jbegin,
Do you have a scanner that will show you what the 02's are doing, if so, is there any difference between the 2 front signals?
 
Reply With Quote
  #6  
Old 09-28-2009, 08:46 PM
JBEGIN's Avatar
Senior Member
Thread Starter
Join Date: Apr 2008
Location: Latham, NY
Posts: 509
Thanks: 0
Thanked 0 Times in 0 Posts
Default

wondering if i should clear out the codes and see which ones come back, maybe this 1129 is just a fluke and my disco is making things up....

Disco Mike,
Nope,my scanner is just the basic one from AB... i dont think it tells what the 02's are doing.
 
Reply With Quote
  #7  
Old 09-28-2009, 10:35 PM
Senior Member
Join Date: Oct 2008
Posts: 3,106
Thanks: 0
Thanked 0 Times in 0 Posts
Default

I would clear your codes and see what comes back. Also rent a scanner from autozone that will read live data and see what the voltages are for each O2 sensor. Maybe you will get lucky and one will be out of whack.
 
Reply With Quote

Thread Tools
Search this Thread
Advertising
Featured Sponsors
Vendor Directory

Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.