How do I fix code P0492?

Multiple repairs may be necessary to repair the P0492 code. The most common repairs are replacement of the pump and the one-way check valve. However, vacuum line leaks will also need to be repaired, and the cylinder head may need to be thoroughly cleaned of carbon build up before the code can be cleared permanently.

What does the code P0491 mean?

Secondary Air Injection Insufficient Flow Bank 1
Diagnostic trouble code (DTC) P0491 stands for “Secondary Air Injection Insufficient Flow Bank 1.” It is logged once the vehicle’s powertrain control module (PCM) perceives that there is a possible issue within the SAI system. This code is logged once the PCM determines that the secondary air flow in bank 1 is too low.

What is code P0410?

malfunctioning Secondary Air Injection System
Code P0410 is the result of the Engine Control Module (ECM) indicating a malfunctioning Secondary Air Injection System. This happens when the O2 sensor does not accurately detect the changes in the O2 level of the exhaust while the air injection system is functioning.

What is code P2431?

If your car is showing the P2431 engine code, it means that your secondary air system, which pumps fresh air into the exhaust to reduce vehicle emissions, has a problem. An incorrect airflow has been detected, and you should get it fixed promptly to avoid a failed emissions test.

How do I fix code P0491?

What repairs can fix the P0491 code?

Replacing any damaged wiring, connectors, or other electrical components.
Replacing the secondary air injection pump.
Replacing the pump’s one-way check valve.
Repairing or replacing any damaged vacuum hoses or fittings which could be causing a vacuum leak.
Replacing pump fuses.

What causes secondary air injection malfunction?

A faulty pump is generally the most frequent cause of the system failing. Ingress of moisture can cause damage which results in seizure of the pump. Faulty ground and voltage supply can also cause the pump to fail.

How do I fix error code P0410?

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.

How do I fix code P2431?

What repairs can fix the P2431 code?

Replacing the secondary air pump.
Repairing or replacing a wiring harness.
Resolving poor electrical connections.