P0410 - OBD Trouble Code

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Is your car’s Check Engine Light On? Do you hear noise coming from under the hood? Are you experiencing lean or rich engine conditions? All these can be due to a problem with the air injector system and can thus store OBD code P0410 in the Powertrain Control Module (PCM).

Error Code P0410 means that there is a problem with the car’s emissions system, and most probably with the air pump. The air pump sends air to the exhaust to decrease the emissions. The air from the outside and pumped into the one-way check valves to every bank of the exhaust.

This code is usually caused by air pump pressure escaping to the outside if any of the air pipes that lead to the combustion valve is damaged or lodged after changing the spark plug. Most of the time, this code is triggered when one-way check valve has been damaged or has allowed water (which naturally happens in the exhaust) back into the pump. During colder seasons, particularly in seasons with higher humidity, water can be excessive and may partially fill the air pump and freeze there. Obviously, if the PCM triggers the pump on, the pump will not turn, and this results to overloading of the circuit and “pop” the fuse.

What causes this problem with the Secondary Air Injection System Malfunction?

• Faulty air pump check valves
• Defective vacuum lines or air control solenoids
• Defective air pump or air pump relay
• Restricted system or system plugged with carbon
• Water collected and accumulated in the air pump
• Frozen or corroded pump
• Blown air pump fuse caused by freezing

1. Air Injection Pump - Most common problem with this OBD error is with the air pump. Get it checked and replace with new air pump now!
2. Air Control Valve Relay - The valve relay can also be damaged causing air intake problems. Replace faulty valve relays. Buy now!
3. Air Injection Check Valve - Faulty check valve may lead to water or moisture entering the pump. Thus, if the valve is faulty/damaged, it’s time to replace it now!
4. Diagnostic Tools - Quality OBD scanner and tools is required to resolve this OBD issue. Buy new diagnostic tools from us.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0410 here:

Common Symptoms

• Abnormal noise from the air intake system
• Engine hesitation upon acceleration
• Engine stalling on start up or in idle
• Check Engine Light illumination
• Engine rich or lean conditions

Here are some ways with the help of which you will be able to correct the OBD Code P0410.

• Air injection pump and power relay replacement
• Replacement of O2 sensors that respond too slow as they age
• Clogged Air injection pump intake filter replacement

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Here are some steps which you should follow in order to diagnose this fault code:

• Scan codes and freeze frame data in order to verify the problem and check if the code is really present.
• Clear the code and retest the vehicle under similar conditions to see if the error reappears.
• Inspect and repair the O2 sensor, if faulty, before checking for problems related to the emission system.
• Check the O2 sensor pid on a scanner to see if the sensor reacts when the air injection pump is activated, the sensor should go to below 150 mv within 3 seconds.
• Replace the old and underperforming O2 sensor and retest the vehicle for errors.
• Checks air injection relay for power out of relay if pump does not turn on.
• Checks the air injection pump for proper resistance between pins of power and ground and replace the pump, valve and or relay as required.
• If everything checks out, inspect for the problem with the PCM/ECM and check if it requires reprogramming or replacement.

Common Mistakes When Diagnosing the P0410 Code

It is important to evaluate all the components before coming to a conclusion or early diagnosis to avoid any errors. Following are the most common mistakes done.

• Not checking for proper intake air flow into the air injection pump before replacing the pump for no air pumping out of it
• Not checking the air injection pump relay for burnt wire connections before replacing a bad air injection pump