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Diagnose Error Code P2440: Issue with Secondary Air Injection System Switching Valve Stuck Open of a car

What the P2440 code means? The purpose of the secondary air injection system is to pump fresh air into the exhaust system. This reduces the amount of harmful pollutants that are emitted by the exhaust. The PCM receives information from the secondary air injection system regarding pressure and flow. This information is sent to the PCM through a voltage signal. What causes the P2440 code? 1. Clogged or disconnected vacuum hose 2. Power train Control Module (PCM) failure 3. Secondary air pump control valve failure 4. Secondary air pump failure 5. Wiring issue


What are the symptoms of the P2440 code?

1. Noisy secondary air injection system 2. Engine stalls while idle 3. Engine stalls when starting 4. Engine hesitates on acceleration Common mistakes when diagnosing the P2440 code: Secondary air injection pump replacement, without fabricating a water drain on the pump housing, may lead to repeated pump failure. Testing the one way check valves is also critical to making a thorough diagnosis.


What repairs can fix the P2440 code?

1. Replace faulty air injection valve 2. Replace faulty one-way check valve 3. Replace faulty air injection pump 4. Replace faulty pressure sensor 5. Repair or replace frayed, broken, or shorted pressure sensor wiring 6. Repair or replace damaged or corroded pressure sensor connector 7. Replace faulty switching valve For more error code diagnostic and repair tips, feel free to contact us at PARTS AVATAR.CA, our professional mechanics will help you to diagnose and fix it.

Partsavatar.Ca - Diagnose Error Code P2440 Issue with Secondary Air Injection System Switching  

The purpose of the secondary air injection system is to pump fresh air into the exhaust system. This reduces the amount of harmful pollutant...

Partsavatar.Ca - Diagnose Error Code P2440 Issue with Secondary Air Injection System Switching  

The purpose of the secondary air injection system is to pump fresh air into the exhaust system. This reduces the amount of harmful pollutant...

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