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 MANUALSTOYOTA2020RAV4 XLE, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 181 (SMART KEY SYSTEM (FOR START, HV) - DIAGNOSTIC CODES (1 OF 2))SMART KEY SYSTEM (FOR START FUNCTION, HV MODEL)DTC B2782: POWER SOURCE CONTROL ECU MALFUNCTION [12/2021 - ]DESCRIPTION
2020 Toyota RAV4 XLE, AWD
DTC B2782: Power Source Control ECU Malfunction [12/2021 - ]: Description
2020 Toyota RAV4 XLE, AWDSECTION Description
WARNING: This page is about a different variant/trim than selected.
As this DTC is not normally output, it may be due to noise in the LIN communication system, etc.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| B2782 | Power Source Control ECU Malfunction | One of the following conditions is met (1-trip detection logic (Only output while a malfunction is present and the power switch is on (IG).)):
|
ID code box (immobiliser code ECU) | DTC Output Confirmation Operation:
|
VEHICLE CONDITION AND FAIL-SAFE FUNCTION WHEN MALFUNCTION DETECTED
| Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|
| Hybrid control system cannot be started | Prohibits the hybrid control system from being started. |
RELATED DATA LIST AND ACTIVE TEST ITEMS
| DTC No. | Data List and Active Test |
|---|---|
| B2782 | - |
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.