Secondary air injection system malfunction in engine control module (ECM) is called P0410 code. What are the possible reasons why there is an occurrence of secondary air injection to fail or malfunction? A possible reason of secondary air injection system malfunction is low airflow into the exhaust, as a result of blockage into the air injection system air intake. Secondary air injection malfunction also happens if the oxygen sensors are sluggish in the response time of exhaust’s increased oxygen levels. It may also be a result of a partly clogged catalyst which increases back pressure in the exhaust. The same is true with the air injection pump relaying contacts not making any contact.
What are the symptoms of secondary air injection malfunction? The Check Engine Light is illuminated and the code is set to ECM memory and freeze frame. How does an auto mechanic diagnose secondary air injection malfunction? When it comes to the method on how P0410 or secondary air injection malfunction is diagnosed, it involves scanning of codes and documentation of the freeze frame data (to determine the problem), clearing the engine codes and retesting the secondary air injection system (detect proper functioning), repairing any oxygen sensor or other codes (prior to P0410 diagnosis), monitoring the oxygen sensor pid using a scanner (observe sensor reaction when the air injection pump is activated), and replacing a slow oxygen sensor and retesting the entire system.
What are the usual mistakes in the diagnosis of secondary air injection malfunction? The most common mistakes of when it comes to secondary air injection malfunction or P0410 code diagnosis include not checking the air injection pump relay for burnt wire connections prior to replacement of an air injection pump, and not checking for proper intake air flow into the air injection pump prior to replacement. If there is secondary air injection malfunction or P0410 code, your vehicle may fail the emission testing. Same is true with a check engine light that is on. The repair of secondary air injection malfunction or P0410 code include sluggish oxygen sensors, replacement of air injection pump and power relay, and clogged air injection intake filter.
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