Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer has detected a problem with the sensor that measures air flow or pressure in the exhaust system on one side of the engine.
The P2436 code is triggered when the secondary air injection system's air flow or pressure sensor circuit on bank 2 (the side of the engine with cylinder 2) is not operating within the expected range.
The secondary air injection system is designed to reduce emissions by injecting air into the exhaust stream to help burn off excess hydrocarbons. The system uses a sensor to monitor air flow or pressure. If the sensor's readings are outside of the expected range, the engine control module (ECM) will set the P2436 code.
• Check Engine Light illuminated
• Poor engine performance
• Increased emissions
• Faulty air flow/pressure sensor
• Wiring issues in the sensor circuit
• Blocked or leaking air injection system components
Secondary Air Injection System: A system that injects air into the exhaust to reduce emissions.
Bank 2: The side of the engine that does not contain cylinder 1.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage.
• Test the air flow/pressure sensor for proper operation.
• Replace the faulty air flow/pressure sensor.
• Repair or replace damaged wiring or connectors.
• Clean or replace blocked air injection components.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Toyota Camry
• Lexus RX350
• Chevrolet Silverado
• Regular maintenance of the air injection system.
• Inspect and clean sensors periodically.
• Check for and repair exhaust leaks.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle inspected by a professional if unsure.
• Regularly maintain the vehicle to prevent future issues.
Check with your vehicle manufacturer for specific warranty coverage related to emissions components.
The P2436 code is commonly associated with vehicles that have secondary air injection systems and is more prevalent in models with higher mileage.
Moderate – While the vehicle may still be drivable, it is important to address the issue to avoid increased emissions and potential engine performance problems.
Driving with a malfunctioning emissions system can lead to increased pollution and may be illegal in areas with strict emissions regulations.
• Engine at operating temperature
• Vehicle in open loop mode
The air flow/pressure sensor is typically located near the secondary air injection pump or within the exhaust system on bank 2.
Q: Can I drive with a P2436 code?
A: While the car may still be drivable, it is not recommended to ignore the issue as it can lead to increased emissions and potential engine problems.
Q: How can I prevent a P2436 code?
A: Regular maintenance of the air injection system and periodic inspection of sensors can help prevent this code.
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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.