Decoding P0411 The Ultimate Diagnostic Handbook

Check engine is on. Car is 1995 4.0L american version. Car is running just fine but this code keeps coming up all the time. ''P0411 ... P0411 Code: Secondary Air Injection Incorrect (OBD-II). Jump to Latest. DTC P0411 – A secondary air injection system insufficient airflow fault conditionhas been detected. •DTC P0412 – A secondary air injection valve ... I bought a new smog pump and a new check valve. i swapped out both parts valve and pump. Only code i get now is P0411. when starting the car now the pump is ... Tool Tip: Code P0411 – Secondary Air Injection System Incorrect Air Flow Detected. The AIR solenoid is a normally closed solenoid. When the AIR ... I inspected all the vacuum lines from the secondary air pump up to combi valve in back of head. everything was ok; no cracks or kinks. 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 ... 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” This diagnostic trouble code (DTC) is a generic powertrain code, which means that it applies to OBD-II equipped vehicles. 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.