2008年5月3日 · The next day, the light came back on again, it was the same code. I decided to take the vehicle to VW to see what was wrong. This is what the advisor put on the receipt: …

2012年3月25日 · I have a P0491 code that I can't diagnose (Secondary Air Injection System, Insufficient Flow - Bank 1). Here's what I've checked: - Verified that pump is working by …

2010年1月12日 · air and flow p0491 p0492 Jump to Latest 17K views 6 replies 5 participants last post by Kilroy2032 Nov 9, 2021

2021年9月6日 · Could this be as simple as replacing the spark plugs/doing a general tune-up, or could it be somehow related to the P0491 and P0492 faults - maybe a vacuum leak on top of …

2007年4月27日 · Just bought a 2002 Passat GLX. 35,000 Miles on it. After driving it about a month now recieve CEL. Took car up to "sweet" Auto Zone just to have them do there free …

2011年7月20日 · It seems others have had very similar issues with the isolated P0491 Bank 1 code. All the things I read suggest that the Kombi/EGR valve or the vacum lines as they age …

2017年4月15日 · and confusion over p0491 p0492 Jump to Latest 2.7K views 8 replies 4 participants last post by Intromission Apr 29, 2017

2023年3月18日 · Hello, I have 2015 passat 1.8 tsi limited. I got the P0491 code and I am trying to do some diagnostics. I am trying to locate the secondary air pump relay but I don't know why I …

2010年12月11日 · Volkswagen Passat Discussion. Volkswagen Passat B5 Discussion

2012年9月2日 · When found in the NAR 1.8T VW Passat 1.8T check TSB 01-09-09 or 2005554 or Pass-Thru equivalent TSB Note: The Passat 26E5 or "R5" recall includes the same software …