Empowering Car Owners Understanding and Fixing Code P0411

Claim your FREE engine code eraser https://free.nonda.co ============================= Engine Code P0411 Saving Repair Parts: Air ... P0411 secondary air injection system incorrect flow detection ... I am getting a P0411 secondary air injection system incorrect flow detection ... That code is for the secondary air injection for incorrect flow. Typically what will throw the code is when someone installs a flex fuel kit they put the ... The AIR pump flow check monitors the HO2S signal at idle to determine if secondary air is being delivered into the exhaust system. P0411 indicates that the ECU has detected the flow from the secondary air injection system to be out-of-specification. It can be hard to differentiate between actual faults and mere oddities of the OBD system itself. I had a P0411 once. Pump failed. I unplugged ... I would start by checking for vacuum leaks going to the combi valve, FPR, any under the intake manifold. If you think the SAI is leaking. Here's ... Here's how the system works, the pump pulls in fresh air when the car cold starts and feeds it through the lines and the vacuum controlled diverter valves. This worked for my 1.8. check the discharge line from the air pump up to the metal pipe for leaks. that metal pipe goes to the combi valve and ... The only error code that their machine comes up with is the dreaded p0411 error message which translates to "Secondary Air Injection System Flow Improper".