P0491 Fix Your Secondary Air Injection System Problem

Ford Focus P0491 Trouble Code Repair Disclaimer: This video is not meant to be a definitive how to.Always consult a professional repair ... Check the plumbing and make sure no air leaks are found in the thicker air pipes. ... anyway of nono of that is found all you have left is carbon ... I got the following two codes: The first one (store trouble codes) P0491 (secondary air injection system insufficient flow bank 1) I did ... Need to erase this codes for a 2010 Q5 3.2 FSI. Thanks in advance for your help. Attached Files .rar ... Air injection errors usually point towards vacuum leak or a blockage. Vacuum leaks can be identified with a smoke tester and sometimes, build up in carbon can ... What is Trouble Code P0491? OBD II Trouble Code P0491 indicates trouble with the Secondary Air Injection System. The components which make up the Air Injection ... This system is only used at cold start and has no effect on the performance. It injects air into the exhaust manifolds for more complete fuel burn. Case #1: Audi · Check the vacuum element and flap in front of the intake manifold. · Inspect for leaks in the vacuum line. · Consider replacing ... SEL: P0491 Secondary Air Injection System Insufficient Flow General BMW Z4 Forum. 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 ...