My a4 is sick... several codes, need help
02-04-2009, 12:49 PM
#11
AudiWorld Member
Thread Starter
Join Date: May 2007
Posts: 126
Likes: 0
Received 0 Likes
on
0 Posts
i dont think coilpacks are causing the 0420 code tho...
I'm also getting a cat system bank 1 below threshold code. The mechanic i was talking to is in his 20's and i gave him a twenty spot for the free service, so I don't think he's tryin to scam me. The misfires are also very sporadic, so its not even effecting performance of the car. but I will try ur advice, thanks!
02-04-2009, 01:20 PM
#13
Member
Join Date: Oct 2003
Posts: 1,547
Likes: 0
Received 0 Likes
on
0 Posts
iirc, someone correct me if I'm wrong, Miltek HFC is the only HFC that won't throw a code on our
cars. Ditto on the aftermarket universal 02 sensors -- spend a few dollars more and get the OEM sensors with the full harness. Search for uid BracketRacer about potential code problems using the universal sensors -- he has his own shop and works on Audi's so he has practical knowledge/experience with them.
02-04-2009, 02:06 PM
#14
Senior Member
Join Date: Aug 2003
Posts: 6,095
Likes: 0
Received 0 Likes
on
0 Posts
Well, I'm not always right, far from it,....m....
but I engineered powertrain control modules for gasoline engines for 14 years, and I've been on this board for almost six years. Coil packs fail a lot more often than cats, and since you've already replaced your cat, the odds of having two bad ones are low, really low.
Thread
Thread Starter
Forum
Replies
Last Post
brandonb93
A4 (B7 Platform) Discussion
12
12-04-2018 01:16 PM
ECS Tuning-Audi
S4 (B8 Platform) Discussion
0
09-25-2015 08:57 AM
ECS Tuning-Audi
Audi A5 / S5 / RS5 Coupe & Cabrio (B8)
0
09-25-2015 08:20 AM
mdkv5
A6 (C7 Platform) Discussion
7
09-16-2015 01:09 AM
