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P2433 Diagnostic Trouble Code Discussion for March 2023

Secondary Air Injection System Pressure Sensor Circuit High Voltage

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Trouble Ticket Help Requests for DTC P2433
Help Request Posted
2005 Toyota Tundra Limited 4.7L Lack of Acceleration VIN: 5TBDT481X5
P2433: Secondary Air Injection Airflow Pressure Sensor Circuit High (Bank 1). Customer brought this one in hardly running. Cleaned MAF sensor and checked fuel pressure. Pressure was 34PSI at idle and dropped to 29 PSI at speed. Replaced the fuel pump and pressure jumped to 45PSI steady. Truck runs better but now will not accelerate ...
March 10, 2023