Unlocking P0411 Essential Tips and Techniques

P0411 is defined as a Secondary Air Injection Incorrect Flow Detected. What does this Mean? The Secondary Air System pumps outside fresh air into the Exhaust ... The 373 relay in the ECM box is the SAIP relay. The circuit to the SAIP is: battery to 40A fuse, fuse to relay contact, contact to SAIP. Tool Tip: Code P0411 – Secondary Air Injection System Incorrect Air Flow Detected. The AIR solenoid is a normally closed solenoid. When the AIR ... 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 ... I have a 2010 Chevy impala LT with the most common trouble issue code P0411 the trouble code on the scanner says “ air injection pump incorrect flow” 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. Like most other monitors, a secondary air monitor DTC only sets after failure on two consecutive trips. Maybe one of your diverter valves is ... It came up as P0411 Secondary Air Injection System Incorrect Flow Detected. Any ideas what this could be? The car seems to be fine with no funny noises. How to fix P0411 Code: Secondary Air Injection Incorrect Flow Detected The secondary air system supplies fresh air to the exhaust which ...