P0420 00 - Catalyst System; Bank 1 - BAD SMELL .... any ideas

[jamesj2k]

About 3 weeks ago I noticed that my exhaust had a bad smell to it (happened overnight). More "chemical" like stench. Then 2 weeks later this code popped up.

I found plenty of info on the code itself but no one ever mentioned a bad smell form exhaust.

Any ideas? catalyst, o2 sensor? (i noticed no damage to exhaust damage while under car)


Address 01: Engine (J623-CCBA) Labels: 06E-907-551-CAK.clb
Part No SW: 8K0 907 551 D HW: 8K0 907 551 A
Component: 3.0T SIMOS84 H07 0003
Revision: --H07---
Coding: 0104000A240F0128
Shop #: WSC 06325 000 00000
ASAM Dataset: EV_ECM30TFS0218K0907551D 001003
ROD: EV_ECM30TFS0218K0907551D.rod
VCID: 3261042C653D1AB1A9F-8067

1 Fault Found:
6093 - Catalyst System; Bank 1
P0420 00 [237] - Efficiency Below Threshold
MIL ON - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 2
Mileage: 111283 km
Date: 2015.09.25
Time: 10:35:43

Readiness: 0000 0000

[raudiace4]

Sounds like your cats are on the way out.

[S4Phantom]

Smell like rotten eggs? If so you need a cat

[chaos2984]

You need a Cat. The code tells you so. If your within the 8yr 80K miles you are still under warranty.

[RWD2quattro]

Make sure you flash back to stock or no go. If your car is out of factory warranty but it's tuned they may deny warranty, that happened to someone I know.

[Ryan_qttro]

There is a new TSB out, for a software update on some models throwing Catalyst efficiency codes. If ya wanna PM me your VIN I can check if your VIN falls under it in the morning. Unless your for sure the cat is toast.

[jamesj2k]

Dealer said driver cat is toast. Said warranty won't cover because I have APR stage one. Can I argue or do I just repair at a local place with OEM replacement?



QUOTE=Ryan_qttro;11099361]There is a new TSB out, for a software update on some models throwing Catalyst efficiency codes. If ya wanna PM me your VIN I can check if your VIN falls under it in the morning. Unless your for sure the cat is toast.[/QUOTE]