In terms of ECM or Engine Control Module P0410 code refers to secondary air injection system malfunction. What are the possible reasons why there is an occurrence of secondary air injection to fail or malfunction? One reason for secondary air injection system malfunction is if there is low airflow into the exhaust, which happens when there is blockage into the air injection system air intake. If the oxygen sensors respond slow to increased oxygen in the exhaust, then this may also result to secondary air injection malfunction. A partly clogged catalyst can also lead to secondary air injection malfunction due to increasing back pressure present in the exhaust. It also holds the same with relaying contacts of air injection pump not making contact.
What are the signs of secondary air injection malfunction? When it comes to the warning signals of secondary air injection malfunction, it includes noisy air injection system pump (bad bearings), the engine may run too rich (due to excessive oxygen pumped into the exhaust), and illuminated Check Engine Light (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 by an auto mechanic, it generally involves scanning of codes and documentation of the freeze frame data (to identify the root cause of the problem), clearing the engine codes and retesting the secondary air injection system (to detect proper operation), repairing any oxygen sensor or other codes (prior to P0410 diagnosis), monitoring the oxygen sensor pid using a scanner (to observe sensor reaction when the air injection pump is activated), checking the air injection replay for source of power, checking for the right resistance between the ground and pins of power, 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 common mistakes of diagnosing secondary air injection malfunction or P0410 code 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 air pump replacement. A failing secondary air injection system may lead to failed emission test result. Your vehicle will also fail the emission test if the check engine light that is on. In order to fix a secondary air injection malfunction or P0410 code, there should be the replacement of air injection pump and power relay, sluggish oxygen sensors, and clogged air injection intake filter.
Are you having problems with your Toyota Tundra secondary air injection system? Do you know anything about SAIS bypass kit? You may visit our homepage or website to know more about how Hewitt-Tech can help you. Get a professional help now!