Unveiling the Secrets of P0491 A Comprehensive Analysis

The error code P0491 can be defined as Secondary Air Injection System Insufficient Flow Bank 1. This trouble code indicates that there is an issue on the side ... Ford Focus P0491 Trouble Code Repair Disclaimer: This video is not meant to be a definitive how to.Always consult a professional repair ... It's not serious. Secondary air injection is used to warm up the catalytic converters during a cold start. You'll have to get it diagnosed to ... 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. The P0491 code tell there is a fault with the system – usually that the secondary air flow is too low on bank 1. Discover what a P0491 code means for your Volkswagen and how to troubleshoot related Service Bulletins. Learn the causes, symptoms, ... It read p0491. That apparently has something to do with the secondary air injection system. I think that has something to do with the n51? If these valves can't open, there won't be any flow into the engine from the secondary air injection pump and the insufficient flow codes are ... The secondary air injection system utilizes ambient air, injecting it into the exhaust, thereby diluting the mixture and facilitating lower emissions ... Error code P0491 which to my understanding is related to the secondary air injection system on bank 1(whatever it means, I guess cylinder 1)