WebApr 12, 2024 · P0420 code is gone. the think rattles like crazy which leads me to believe the insides have fell apart. as the heat shield does not vibrate. extramly . ... Catalytic Converters for Audi A4, Catalytic Converters for Audi A3, Catalytic Converters for Chevrolet S10, Catalytic Converters for Chevrolet Colorado, WebMay 5, 2013 · Intake, Headers and Exhaust - Check Engine Light w/ P0420 code - Good morning guys, I'm having some major difficulty with my 6 speed 2004 Audi A4 1.8T. …
Check Engine Light w/ P0420 code - AudiForums.com
WebSep 11, 2013 · Error Code P0299: Turbo/Super charger underboost So I got a check engine light last night after reaching about 5000 rpms (don't go that high too often) and took it to Autozone and got this code pulled. The … WebContents. 1 16804/P0420/001056 - Catalyst System; Bank 1: Efficiency Below Threshold. 1.1 Possible Causes. 1.2 Possible Solutions. 1.3 Special Notes. small world bookstore venice
Audi A3 Questions - My Audi A3TDI has these codes popping up P0420 ...
WebMar 17, 2024 · The P0420 code indicates that the ECM has detected underperformance of the catalytic converter’s efficiency on Bank 1. It can be caused by a faulty catalyst, or it … WebMar 15, 2024 · P0420 16804 Catalyst System Efficiency Below Threshold Bank 1 It says checks to do: 1. Heated Oxygen Sensor (H02S) -G39- and oxygen sensor regulation before catalytic convertoer checking ... - 2001 Audi A4 Saloon 3.0 Quattro Sport (220ps) - Ebony Pearl (2003 - present) Diagnostics: VCDS HEX-NET (Professional) A. acano Registered … WebSep 14, 2012 · B6 Models - p0420 code completely confused HELP PLEASE!!!!! - I am getting a p0420 code. i have an aftermarket evan fischer cat about a year old. I have tried to use non foulers. I tried 4 short non foulers. 3 non drilled and 1 drilled and still got the p0420 code. Would this ecu throw this code if bursts of air... small world boutique