Conquering P0491 A Comprehensive Guide to Emissions System Diagnostics

Turns out that a line from the secondary air injection system was disconnected. Pretty sure it happened at the full service at BH Lambo. The OBD-II fault code P0491 means that the Secondary Air Injection System is not providing enough airflow into the exhaust system during ... In this video, I will show you how to fix BMW the air injection codes p0491 and P0492. P0492: Secondary Air Injection System Insufficient ... New article discussing fault codes P0491 P0492 on N62 V8 engine. Secondary Air Injection System Fault Codes P0491 P0492 BMW 5 Series 2004 ... P0491 and P0492 indicate that you have insufficient air injection flow into the exhaust manifolds. The oxygen sensors are looking for a leaner ... Need to erase this codes for a 2010 Q5 3.2 FSI. Thanks in advance for your help. Attached Files .rar ... The code it's showing is p0491: Secondary Air Injection System Insufficient Flow Bank 1. The thing is, I'm fairly certain that I do not have SAI. Ffs love the car… but these issues lol!! Left engine mount leaking needs replacement, front controll arms bushings torn, then P0491 air ... I have a p0491 issue (Secondary Air Injection System Insufficient Flow Bank 1). Car runs fine, but I was curious about. Code P0491 Secondary Air Injection System (Right Bank). Subscribe. Feb 3, 2006 | 10:03 PM.