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.
2009 Toyota Prius BaseFACTORY OEM SERVICE PROCEDURE
Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| The monitor will run whenever the following DTCs are not present | P0010 (OCV bank 1, 2), P0011 (VVT system bank 1 - advance), P0012 (VVT system bank 1 - retard), P0016 (VVT system bank 1 - misalignment), P0031, P0032 (A/F sensor heater) P0102, P0103 (MAF meter) P0115, P0117, P0118 (ECT sensor) P0120, P0121, P0122, P0123, P0220, P0222, P0223, P2135 (TP sensor) P0125 (Insufficient ECT for closed loop) P0171, P0172 (Fuel system) P0301, P0302, P0303, P0304 (Misfire) P0335 (CKP sensor) P0340, P0341 (CMP sensor) P0351, P0352, P0353, P0354 (Igniter) P0446 (Purge flow switching valve fixed) P0450 (Pressure sensor chattering) P0451, P0452, P0453 (Pressure sensor malfunction) P1450, P1451, P1452, P1453 (FTP sensor malfunction) P1455 (Fuel tank system malfunction) P2195, P2196 (A/F sensor - rationality) P2237, P2238, P2239, P2252, P2253 (A/F sensor - open) P2A00 (A/F sensor - slow response) |
| Engine | Running |
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.