Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a system that helps reduce pollution, and one part of it isn't working right now because a valve is not getting the power it needs.
The P0413 code indicates that the Engine Control Module (ECM) has detected an open circuit in the secondary air injection system's switching valve A.
The secondary air injection system is designed to reduce emissions by injecting fresh air into the exhaust stream to help burn off excess hydrocarbons. The 'Switching Valve A' is an electrically controlled valve that directs the air from the air pump to the exhaust. An 'open circuit' means that the electrical circuit is broken, so the valve cannot operate as intended.
• Check Engine Light is on
• Possible slight decrease in engine performance
• Failed emissions test
• Faulty air injection switching valve
• Blown fuse or open circuit
• Wiring issues such as a broken wire or poor connection
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors to the switching valve for damage.
• Check the fuse related to the air injection system.
• Replace the faulty air injection switching valve.
• Repair or replace damaged wiring or connectors.
• Replace any blown fuses.
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, pliers)
$100 - $300
Moderate
• Chevrolet Silverado
• BMW 3 Series
• Toyota Camry
• Regular maintenance and inspection of the air injection system.
• Ensure electrical connections are clean and secure.
• Replace components at the first sign of failure.
Engine Performance
• Have the vehicle inspected by a professional mechanic.
• Avoid driving for extended periods with the Check Engine Light on.
Check if the vehicle's emissions warranty covers repairs related to the air injection system.
The P0413 code has been associated with vehicles that have secondary air injection systems, commonly found in models from the late 1990s onward.
Moderate – While the vehicle is still drivable, emissions may increase, and it could lead to a failed emissions test.
Driving with a malfunctioning emissions system may violate local emissions laws and contribute to air pollution.
• Engine at operating temperature
• Vehicle stationary or in park
The air injection switching valve is typically located near the engine or exhaust manifold.
Q: Can I drive my car with a P0413 code?
A: Yes, but it's recommended to fix the issue soon to avoid increased emissions and potential engine performance issues.
Q: Will a P0413 code affect my car's performance?
A: It might cause a slight decrease in performance, but the main concern is increased emissions.
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