Posts Tagged: secondary air injection

How to fix a P0410 trouble code

The two most common causes of a P0410 trouble code A P0410 code is a Secondary Air Injection System Malfunction. The two most common causes of causes of a P0410 are a bad switching valve or a bad A.I.R. pump. Here’s how to diagnose each and fix a P0410 trouble code, What is secondary air injection? On a cold start, the ECM commands a rich fuel mixture to help start the cold engine. Because the cold metal quenches some of the combustion early, un-burned fuel flows into the catalytic converter. … Read More