P0491 Code Empowering You with Solutions and Understanding

I have Codes P0491 and P0492 coming up for my 04 V8. Now I know that both are for the secondary air system bank 1 and 2 but how do I pin point the problem my ... The description is "Secondary Air Injection System Insufficient Flow Bank 1 and same for Bank 2. Any one else seen these before. Could spirited ... I'm getting code P0491–Secondary Air Injection System Insufficient Flow Bank 1. I've cleared it twice and it keeps coming back. Does anyone know ... The P0491 code indicates a fault with the system, typically indicating that the secondary air flow is too low on bank 1. Bank #1 refers to the side of the ... Cold is a relative term. The engine coolant temperature needs to be under 104F/40C otherwise the SAP pump WILL NOT be commanded on. If you have ... A quick global scan revealed the fault code P0491 for Secondary Air Injection System Bank 1, Insufficient Flow Short with Power – Intermittent. Share your videos with friends, family, and the world. Here is the schematic for an 03 manual: There should not be a vacuum line running back to the transmission area, if it is open you have a vacuum leak which can ... It's code p0491 -- Secondary air pump, bank1. From what I've read it could be the bank 1 valve and/or the hoses that run under the manifold. Turns out that a line from the secondary air injection system was disconnected. Pretty sure it happened at the full service at BH Lambo.