System too rich DTCs. suggestions?
08-26-2005, 10:34 AM
#1
AudiWorld Super User
Thread Starter
Join Date: Jan 2004
Posts: 3,102
Likes: 0
Received 0 Likes
on
0 Posts
System too rich DTCs. suggestions?
codes below. I was thinking I could pull some fuel back with lemmi. thoughts?
---------------------------------
DTCs: 7/31/05 12:59 pm - 4 Faults:
MS STAGE 6.0 0003
P/N: 8D0 907 551 HA
Coding: 06711, WSC: 05052
16815 P0431 035
Warm up Catalyst Bank 2: Efficiency Below Theshold
16805 P0421 163
Warm up Catalyst Bank 1: Efficiency Below Theshold [Sporadic]
17537 P1129 163
Bank 2 Mixture Adaptation (Mult): system too rich [Sporadic]
17535 P1127 163
Bank 1 Mixture Adaptation (Mult): system too rich [Sporadic]
---------------------------------
DTCs: 7/31/05 12:59 pm - 4 Faults:
MS STAGE 6.0 0003
P/N: 8D0 907 551 HA
Coding: 06711, WSC: 05052
16815 P0431 035
Warm up Catalyst Bank 2: Efficiency Below Theshold
16805 P0421 163
Warm up Catalyst Bank 1: Efficiency Below Theshold [Sporadic]
17537 P1129 163
Bank 2 Mixture Adaptation (Mult): system too rich [Sporadic]
17535 P1127 163
Bank 1 Mixture Adaptation (Mult): system too rich [Sporadic]
Trending Topics
08-26-2005, 10:51 AM
#8
AudiWorld Super User
Thread Starter
Join Date: Jan 2004
Posts: 3,102
Likes: 0
Received 0 Likes
on
0 Posts
again, possible. 02s and MAF are about the same age.
I suppose either or both could be gone. I'll do some logging on Block 211 to see what comes up for the MAF. Thanks DAP. 
08-26-2005, 10:54 AM
#9
Don't pull fuel back wihtout exhausting all other potential issues.
Also, there's a few reasons you could run rich.. (besides the BOV :-p )
In addition to bad MAF or o2 sensors (logs should show that), you may also have a boost leak. Before adjusting fueling, try and find out what else could be the issue. (if you pull fuel back now, then later fix a boost leak, you'll run super lean, not good)
In addition to bad MAF or o2 sensors (logs should show that), you may also have a boost leak. Before adjusting fueling, try and find out what else could be the issue. (if you pull fuel back now, then later fix a boost leak, you'll run super lean, not good)
08-26-2005, 11:02 AM
#10
Elder Member
Join Date: Jan 2004
Posts: 30,248
Likes: 0
Received 0 Likes
on
0 Posts
I've never found 211 to be very helpful. Just log 003 and 031 seperately...
then post the info and list your mods. Based on that, we should be able to help you identify an 02/MAF issue.