Empower Yourself P0491 and Secondary Air Injection System Diagnosis

The high probability fix of the P0491 & P0492 error is to replace the secondary air valve. The valve is prone to fail over time (seize) and not ... Products | P0491, Appleton · Application: For use with toggle switch and 4 x 2-1/8 in box · Country of Origin: US · Cover Type: Toggle Switch · Finish: Galvanized ... engine code P0491 and P0492 problem solved ... I have been able to fix these trouble codes on the secondary air injection system with the help of ... Share your videos with friends, family, and the world. Secondary air injection is an emissions component on PZEV models that isn't related to engine operation - MAF not related at all. Electric air ... The secondary air injection system utilizes ambient air, injecting it into the exhaust, thereby diluting the mixture and facilitating lower emissions ... It is a round valve with a small vacuum hose attached at the top rear. Remove the OEM diverter valve, and set it aside. The new parts (Autozone ... P0491 and P0410 Codes Secondary Air Injection System ... Background on the car... 2007 Fusion w/ roughly 54k on the clock....no issues with the ... 2002 530i e39 - P0491 & P0492 Secondary Air Injection System (Bank 1 & 2) Emission rejected due to codes P0491 & P0492. Case #1: Audi · Check the vacuum element and flap in front of the intake manifold. · Inspect for leaks in the vacuum line. · Consider replacing ...