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 MANUALSTOYOTA20054RUNNER SR5, 4.7 T, RWDREPAIR AND DIAGNOSISGENERAL INFORMATIONDTC INDEXENGINE IMMOBILIZER SYSTEM DTCS
2005 Toyota 4Runner SR5, 4.7 T, RWD
Engine Immobilizer System DTCS
2005 Toyota 4Runner SR5, 4.7 T, RWDSECTION Engine Immobilizer System DTCS
ENGINE IMMOBILIZER SYSTEM DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
| DTC | Description |
|---|---|
| B2780 | PUSH SWITCH/KEY UNLOCK WARNING SWITCH MALFUNCTION |
| B2784 | ANTENNA COIL OPEN/SHORT |
| B2793 | TRANSPONDER CHIP MALFUNCTION |
| B2794 | UNMATCHED ENCRYPTION CODE |
| B2795 | UNMATCHED KEY CODE |
| B2796, B2798 | NO COMMUNICATION IN IMMOBILIZER SYSTEM & COMMUNICATION MALFUNCTION NO. 2 |
| B2797 | COMMUNICATION MALFUNCTION NO. 1 |
| B2799 | ENGINE IMMOBILIZER SYSTEM MALFUNCTION |
RENDER: 1.0x
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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.