Troubleshooting Code P0411 The Ultimate DIY Guide

P0411 CEL - Secondary Air Injection ... I've tried replacing the smog/air pump and confirmed that it works but still getting the codes. I've read ... The AIR pump flow check monitors the HO2S signal at idle to determine if secondary air is being delivered into the exhaust system. My car has a problem with the secondary air injection system. Could be the pump, the valve, the relay. Not likely hoses since the car is new (age wise), and ... It happens in the morning after pulling out of driveway. I replaced the vacuum lines to the canister, and this is not the infamous gas cap code. What is a P0411 code? Does this have something to do with the AIR pump? Everytime we test the car the system comes on there's power at the ... Series I Trouble Shooting - P0411 code ???? - got a P0411 secondary air injection incorrect, upstream flow detected. just curious if any one ... 2008 Jetta 2.5, throws code P0411 Secondary Air Injection System Incorrect Flow Detected. I've jumpered the air pump ... Customer: Customer: 2008 ... P0411 is a diagnostic trouble code (DTC) that means “Secondary Air Injection System Incorrect Flow Detected.” The P0411 code means that the PCM ... P0411 Detects an insufficient flow condition. This test is run during Phase 1 (AIR pump commanded On, Valve commanded Open) Leaks downstream of the valve are ... The 411 code is a low flow condition and this could be your problem. You cannot look down the chamber because it is too close to the firewall. Must use an ...