Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with a sensor that checks the air flow or pressure in part of the car's engine. It's like a broken thermometer that can't tell if it's hot or cold.
The P2435 code is triggered when the Engine Control Module (ECM) detects an issue with the air flow or pressure sensor circuit in the secondary air injection system for bank 2.
The secondary air injection system is used to reduce emissions by injecting air into the exhaust system. The air flow/pressure sensor monitors the amount of air and pressure in the system. If the sensor circuit for bank 2 (the side of the engine with cylinder 2) is malfunctioning, the ECM will log this code.
• Check Engine Light is on
• Possible decrease in engine performance
• Increased emissions
• Faulty air flow/pressure sensor
• Wiring issues or poor electrical connections
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connections to the air flow/pressure sensor.
• Test the air flow/pressure sensor for proper operation.
• Repair or replace any damaged wiring or connectors.
• Replace the faulty air flow/pressure sensor.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Toyota Camry
• Lexus RX350
• Chevrolet Silverado
• Regular maintenance checks
• Ensure all sensors are clean and functional
• Inspect wiring for wear and tear
Sensor Issue
• Have the vehicle inspected by a professional.
• Do not ignore the Check Engine Light.
• Consider regular diagnostics to prevent future issues.
Check if the vehicle's emissions warranty covers sensor replacements.
This code has been associated with vehicles that have secondary air injection systems, particularly in models with higher mileage.
Moderate – While the vehicle may still be drivable, emissions may increase and performance could be affected.
Driving with a faulty emissions system may violate local emissions laws and could lead to fines.
• 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 exhaust manifold for bank 2.
Q: Can I drive with a P2435 code?
A: While you can drive with this code, it's best to get it checked soon to avoid increased emissions and potential performance issues.
Q: How can I reset the Check Engine Light?
A: You can use an OBD-II scanner to clear the code, but if the issue isn't fixed, the light will likely come back on.
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Useful when diagnosis points toward damaged wiring, corroded terminals, or connector 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.