What is the P0414 fault code What is the description for the Secondary Air Injection System Vave Switch A Circuit Shorted circuit? How can I fix P0414 fault? What are the symptoms and causes for the P0414 fault code
What is the P0414 fault code? What does it all mean?
A P0414 error code means that the secondary air injection pump valve “A” circuit is malfunctioning. The “A” Circuit is not meaningful if only one valve switch is present in the system. But, if more than one valve switch is used, you can consult the vehicle manual to determine which “A” circuit. The word “Short Circuit” In the description of code, it refers to touching, corroded or stripped wires. A short circuit can also be caused by water leakage.
Secondary air injection (SAI), which is used to inject fresh air into exhaust ports, reduces harmful emissions and cools the engine when it is cold, is the job of this system. The majority of older vehicles use a belt driven pump to draw in the ambient air, compress it slightly and then inject compressed air into their exhaust manifold. The powertrain control module (PCM), which controls the pump and regulates air pressure, uses several valves and switches. The PCM monitors voltage signals coming from pressure sensors strategically placed to detect fluctuations in SAI system tension. Once these parameters have been met, the PCM opens any valves that need to be opened and allows fresh air into the exhaust system. Additionally, the system includes a one way check valve to prevent exhaust gases from entering into the air pump.
Modern vehicles come with electric air injection pumps. The PCM monitors pressure sensors and activates pumps as required. Relay control circuits are used in electrical systems to supply electricity to the solenoid valve and air injection pump. The PCM manages the circuit. To ensure proper operation of the air pump, the PCM monitors the relay control circuit. The air pump relay should be commanded “On” The voltage of the control circuit is close to zero. In the “Off”. When the command is given, the relay’s current voltage will be the same as the battery voltage. A P0414 fault code is set if the PCM detects an issue with this circuit or a short circuit.
The P0414 fault code can affect vehicles of all makes and models, including but not limited to: BMW, Jaguar, Peugeot. Honda. Volkswagen. Jeep. Toyota. Lexus.
Notice Some vehicles do not have a secondary injection system.
Other fault codes that relate to secondary air injection system include P0410 and P0411 as well as P0413,P0415,P0416,P0417,P0418,P0417,P0417,P0418,P0417,P0417,P0418,P0419,P0419,P0418,P0419,P0419,P044F,P0491, and P0492.
What causes the P0414 Fault code?
The following are the most frequent causes of the P0414 fault code:
- – Damaged, melted or snapped wires to the control circuit of the air injection valve. (High circuit voltage indicates broken wires, while low indicates a problem with the short circuit).
- – Damage or melting to the solenoid’s battery supply wires and connector
- – Switch to the defective air injection system valve
- Control relay for defective air injection pump
- Check Valve for defective air injection pump
- – A defective air injection pump
- – Damaged or cracked air injection hose
What are the symptoms for P0414 Malfunction Code?
These symptoms may be present in vehicles with code P0414.
- – Illumination at the check engine lights
- – Air injection system pump may not activate
- – Increased exhaust emissions
- – Rich engine running
- – It smells like exhaust
- – Hessing or squeaking sounds coming from SAI pipes, pump
How to Fix the P0414 Fault Code
There are several repairs that can resolve the P0414 fault code:
- Repairing the power relay of an air injection pump that is not working
- Repairing an air injection valve switch that is not working
- – Replacing an air injection solenoid that is defective
- – Repair or replace the wiring and connections to your relay or valve switch circuit
- Repair or replacement damaged wires between solenoid and battery
- Repairing an air injection pump that is not working properly
- – Replacing a defective one-way valve
- – Repair of cracked or damaged hoses
How Serious Is the P0414 Fault Coding?
The SAI system’s purpose is to reduce exhaust emissions, but it is not essential for the engine’s operation. Therefore, it is not considered serious. The check engine light will usually come on and the driver doesn’t notice anything else. The emission control system is directly connected to P0414. This code will cause the vehicle’s exhaust emission tests to fail.
