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. This code means there's a problem with a sensor that checks the air flow in part of that system.
The P2430 code indicates a problem with the air flow or pressure sensor circuit in the secondary air injection system for bank 1, which is the side of the engine with cylinder 1.
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 air flow/pressure sensor monitors the amount of air being injected. If the sensor circuit malfunctions, it can trigger the P2430 code.
• Check Engine Light is on
• Poor engine performance
• Failed emissions test
• Faulty air flow/pressure sensor
• Damaged or corroded wiring or connectors
• Faulty secondary air injection pump
Secondary Air Injection System: A system that injects fresh air into the exhaust stream to reduce emissions.
Bank 1: The side of the engine that contains cylinder 1.
• Use an OBD-II scanner to confirm the code.
• Inspect the air flow/pressure sensor and its wiring for damage.
• Test the secondary air injection pump for proper operation.
• Replace the faulty air flow/pressure sensor.
• Repair or replace damaged wiring or connectors.
• Replace the secondary air injection pump if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Toyota Camry
• Lexus RX350
• Chevrolet Silverado
• Regular maintenance checks
• Inspect wiring for corrosion
• Ensure air injection system is clean
Sensor Issue
• Have the vehicle checked by a professional mechanic.
• Avoid driving the vehicle for extended periods until repaired.
Check with the vehicle manufacturer for warranty coverage on emissions-related components.
The P2430 code has been more prevalent in vehicles with aging secondary air injection systems.
Moderate – It should be addressed soon to avoid increased emissions and potential engine performance issues.
Driving with this code may cause your vehicle to fail emissions tests, which can be illegal in some regions.
• Engine at operating temperature
• Secondary air injection system active
The air flow/pressure sensor is typically located near the secondary air injection pump or in the air line leading to the exhaust manifold on bank 1.
Q: Can I drive with a P2430 code?
A: While you can drive with this code, it's best to have it fixed soon to avoid emissions issues and potential engine performance problems.
Q: How do I reset the P2430 code?
A: After fixing the issue, you can reset the code using an OBD-II scanner. However, if the problem persists, the code will reappear.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant for airflow, fuel-trim, and intake-metering faults after confirming the sensor is actually at fault.
Airflow and fuel-trim codes can involve the mass air flow sensor after proper diagnosis.
Verify the sensor design and fitment for your exact vehicle.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.