P0410 OBD-II Trouble Code: Secondary Air Injection System Malfunction

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Cost of diagnosing the P0410 code

P0410 is a diagnostic trouble code (DTC) for "Secondary Air Injection System Malfunction". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

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P0410 code definition

Secondary Air Injection System Malfunction

What the P0410 code means

P0410 is an OBD-II generic code that the engine control module (ECM) detected the engine O2 sensor did not detect an increase in the O2 level in the exhaust when the air injection system was commanded on during an active test.

What causes the P0410 code?

  • The air injection system air intake is blocked causing low airflow into the exhaust.
  • The O2 sensors are getting slow to respond to the increase in O2 in the exhaust.
  • The catalyst is partly clogged increasing back pressure in the exhaust.
  • The air injection pump relay contacts not making contact.

What are the symptoms of the P0410 code?

  • The Check Engine Light will be illuminated and the code is set in ECM memory and freeze frame.

  • The air injection system pump may be noisy from bad bearings.

  • The engine may run too rich if excessive O2 is being pumped into the exhaust.

How does a mechanic diagnose the P0410 code?

  • Scans codes and documents the freeze frame data in order to verify the problem

  • Clears the engine codes and retests the air injection system for proper operation

  • Repairs any O2 sensor or other engine codes before continuing with code P0410 diagnosis

  • Monitors 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 2 seconds

  • Replaces a sluggish O2 sensor and retests system

  • 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

Common mistakes when diagnosing the P0410 code

  • 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

How serious is the P0410 code?

  • The air injection pump system is to help lower the emissions coming out the exhaust and can cause the vehicle to fail emission testing.

  • The check engine light being on causes the vehicle to fail emission testing.

  • The air injection pump should not cause any drive symptoms other than a Check Engine Light.

What repairs can fix the P0410 code?

  • Replacing the air injection pump and power relay
  • Replacing O2 sensors that respond too slow as they age
  • Replacing the air injection pump intake filter clogged with debris

Additional comments for consideration regarding the P0410 code

Code P0410 is triggered when the air injection pump passive test fails or is inconclusive then the ECM commands the pump to do an active test and the O2 sensor does not output a higher O2 content in the exhaust within 2 seconds.

Need help with a P0410 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6220.

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