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.
2012 Toyota Prius TwoFACTORY OEM SERVICE PROCEDURE
Typical Enabling Conditions
| Monitor runs whenever following DTCs are not present | None |
| Time after engine started | 3 seconds or more |
| Time after engine fuel cut | 2000 msec or more |
| Engine speed | 950 to 1600 rpm |
| Vehicle speed | 12.5 mph (20 km/h) or more |
| Engine coolant temperature | 70°C (158°F) or more |
| Auxiliary battery voltage | 11 V or more |
| Intake air temperature | -10°C (14°F) or more |
| Atmospheric pressure | 76 kPa(abs) [750 mmHg(abs)] or more |
Factory Service Tools
Use the Manual With the Right Hardware
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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.