Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2025PRIUS XLE AWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROL SYSTEM - DIAGNOSTIC CODES (P0441-P050A)
2025 Toyota Prius XLE AWD
Engine Control System - Diagnostic Codes (P0441-P050A)
2025 Toyota Prius XLE AWDSECTION Engine Control System - Diagnostic Codes (P0441-P050A)
- SFI System
- DTC P0441-7E: Evaporative Emission System Incorrect Purge Flow Actuator Stuck On; DTC P0441-7F: Evaporative Emission System Incorrect Purge Flow Actuator Stuck Off; DTC P0441-9C: Evaporative Emission System Incorrect Purge Flow Low/Insufficient Flow [03/2023 - ]
- DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P0450-15: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P0450-2F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [12/2022 - 03/2023]
- DTC P0450-11: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Ground; DTC P0450-15: Evaporative Emission System Pressure Sensor/Switch Circuit Short to Battery or Open; DTC P0450-2F: Evaporative Emission System Pressure Sensor/Switch Signal Erratic [03/2023 - ]
- DTC P0466-73: EVAP System Vent Valve Stuck Closed Actuator Stuck Closed [12/2022 - 03/2023]
- DTC P0466-73: EVAP System Vent Valve Stuck Closed Actuator Stuck Closed [03/2023 - ]
- DTC P0505-00: Idle Control System [12/2022 - 03/2023]
- DTC P0505-00: Idle Control System [03/2023 - ]
- DTC P050A-00: Cold Start Idle Control System Performance [12/2022 - 03/2023]
- DTC P050A-00: Cold Start Idle Control System Performance [03/2023 - ]
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.