Answer
Apr 20, 2024 - 09:16 AM
Hi there,
The trouble code P0411 stands for "secondary air injection incorrect flow detected." An airflow problem which causes the
engine to run rough running and lack acceleration. It can also cause backfiring. The secondary air system supplies fresh air to
the exhaust stream to reduce emissions through oxidation. Many systems also help bring the catalytic converter up to
operating temperature quickly when the engine is first started. Click our CarParts online blog link for more details about
this trouble code, after clicking our resource Auto Repair 101 general link. I hope this helps!
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