Mastering P0491 A Step-by-Step Solution for Engine Efficiency

2002 530i e39 - P0491 & P0492 Secondary Air Injection System (Bank 1 & 2) Emission rejected due to codes P0491 & P0492. It was running like a dream, but recently threw a code. P0491. I checked the code and it's the secondary air Injection. I have had the hardest ... 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 OBD-II fault code P0491 means that the Secondary Air Injection System is not providing enough airflow into the exhaust system during ... Ford Focus P0491 Trouble Code Repair Disclaimer: This video is not meant to be a definitive how to.Always consult a professional repair ... Bank 1 is the drivers side, check the fuses for the secondary air injection pumps. There are two 40a maxi fuses located in the underhood fuse ... I own a 2010 Bentley Supersport. here is the default code. P0491, what do you think of the secondary air circuit?? how can I identify the SAI 1 motor pump from ... My VW CC 2010 is having a CEL with the code P0491 which means the pressure sensor is not detecting enough air being pumped from the intake into the exhaust. Possible Causes · Fuse or relay for Secondary Air Injection Pump faulty · Hose(s)/Piping between Secondary Air Injection Pump and Combi (Secondary Air Injection) ... I got the following two codes: The first one (store trouble codes) P0491 (secondary air injection system insufficient flow bank 1) I did ...