Unveiling the Truth P0491 and Secondary Air Injection System

Sensor with the hose: https://amzn.to/3UlZBe9 Valve: https://amzn.to/3ViCOjE VW Scan tool: https://amzn.to/49hIRZn Power Probe 3 ... Hi guys, Can anyone help with fault code P0491 and P0492 as in how to fix ? This is a known issue with the 3.0T. It's emissions an emissions issue, no damage to your car will happen while driving with the CEL. I got the following two codes: The first one (store trouble codes) P0491 (secondary air injection system insufficient flow bank 1) I did ... Performed SAI Self Test: Failed. Monitored input and output of secondary air pump. Was able to confirm activation of air pump and adequate flow. 2002 530i e39 - P0491 & P0492 Secondary Air Injection System (Bank 1 & 2) Emission rejected due to codes P0491 & P0492. A quick global scan revealed the fault code P0491 for Secondary Air Injection System Bank 1, Insufficient Flow Short with Power – Intermittent. Both of these codes are pointing towards a defective valve. Tests/Procedures:1. This system uses a pressure sensor to monitor secondary Air Flow from the AIR ... P0491 Secondary Air Injection System, Bank 1 - Insufficient Flow. P0492 Secondary Air Injection System, Bank 2 - Insufficient Flow. My '07 Cayman presented engine codes P0491 and P0492 which are associated with the secondary air system.