Dominating P0411 A Comprehensive Guide to Diagnosis and Repair

The 4 way control line splitter AND 3 way splitter are cracking/splitting. You need to apply 15PSI to pressure test all the intake system. 1) Remove the valve and inspect it for carbon build up (buy a replacement gasket 1st) and possibly replacing it. Part number 11727508049 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 ... 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 ... Series I Trouble Shooting - P0411 code ???? - got a P0411 secondary air injection incorrect, upstream flow detected. just curious if any one ... The p0411 means that the air pump used to inject air into your exhaust ahead of your catalytic converters is not working properly. How to fix P0411 Code: Secondary Air Injection Incorrect Flow Detected The secondary air system supplies fresh air to the exhaust which ... The light may or may not go out on its won, Chevy computers store codes until they are cleared out with a code reader, I'd say go to a parts ... My check engine light is on. The computer showed a trouble code P0411. I need to know what caused it and what I can do to fix the problem.