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 MANUALSTOYOTA2009AVALON LIMITEDREPAIR AND DIAGNOSISENGINE MECHANICALSTARTERSTARTING SYSTEM (2GR-FE)SMART KEY SYSTEMDTC B2277 DETECTING VEHICLE SUBMERSIONDESCRIPTION
2009 Toyota Avalon Limited
DTC B2277 Detecting Vehicle Submersion: Description
2009 Toyota Avalon LimitedSECTION Description
This DTC is output when the submersion circuit monitor inside the power source control ECU detects that the vehicle is submerged in water.
DTC DETECTION CONDITION CHART
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2277 | Submersion circuit monitor inside power source control ECU detects that vehicle is submerged in water | Power source control ECU |
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.