Unveiling the Truth Behind Code P0411 A Comprehensive Diagnosis

The SAP failure seems common in these cars for a number of reasons but carbon buildup seems to be what starts to wear on the components. 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 ... Processing options enable you to specify the default processing for programs and reports. P0411 indicates that the ECU has detected the flow from the secondary air injection system to be out-of-specification. The 4mm inside diameter vaccuum hose gets pinched between the lower intake manifold and the secondary air pump housing, flattening it over time. I did a search on this code (P0411) on the forums and came up with "secondary air injection system incorrect flow". Now some guys said to disconnect the wire ... The code is from lack of oxygen (air) injected into the exhaust stream because the pump is locked up. If this is it, keep your $10. You will ... P0411 stands for “Secondary Air Injection Incorrect Flow Detected.” This code warns about a potential airflow issue in the secondary air system. The secondary air injector is the leaf blower on the passenger side engine. The motor goes out usually because the relay is junk and gets stuck closed. How to fix P0411 Code: Secondary Air Injection Incorrect Flow Detected The secondary air system supplies fresh air to the exhaust which ...