Problem Symptoms Table
WARNING: This page is about a different car, the 2007 Lexus GX 470. However, it is still accessible from the selected car via links, so may be relevant.
ENGINE IMMOBILIZER SYSTEM
PROBLEM SYMPTOM TABLE
| Symptom | Suspected Area | Information |
|---|---|---|
| Engine does not start | Key (Transponder chip malfunction) | DTC B2793: TRANSPONDER CHIP MALFUNCTION |
| Key (Unmatched encryption code) | DTC B2794: UNMATCHED ENCRYPTION CODE | |
| Key (Unmatched key code) | DTC B2795: UNMATCHED KEY CODE | |
| Key (No communication in immobilizer system) | DTC B2796, B2798: NO COMMUNICATION IN IMMOBILIZER SYSTEM; COMMUNICATION MALFUNCTION NO. 2 | |
| Key (Communication malfunction) | DTC B2797: COMMUNICATION MALFUNCTION NO. 1 | |
| Transponder key amplifier (Antenna coil open/short) | DTC B2784: ANTENNA COIL OPEN/SHORT | |
| Transponder key amplifier (No communication in immobilizer system) | DTC B2796, B2798: NO COMMUNICATION IN IMMOBILIZER SYSTEM; COMMUNICATION MALFUNCTION NO. 2 | |
| Transponder key amplifier (Communication malfunction) | DTC B2797 COMMUNICATION MALFUNCTION NO. 1 | |
| Transponder key ECU assembly (Key unlock warning switch malfunction) | DTC B2780: PUSH SWITCH/KEY UNLOCK WARNING SWITCH MALFUNCTION | |
| Transponder key ECU assembly (Antenna coil open/short) | DTC B2784: ANTENNA COIL OPEN/SHORT | |
| Transponder key ECU assembly (No communication in immobilizer system) | DTC B2796, B2798: NO COMMUNICATION IN IMMOBILIZER SYSTEM; COMMUNICATION MALFUNCTION NO. 2 | |
| Transponder key ECU assembly (Communication malfunction) | DTC B2797: COMMUNICATION MALFUNCTION NO. 1 | |
| Transponder key ECU assembly (Engine immobilizer system malfunction) | DTC B2799: ENGINE IMMOBILIZER SYSTEM MALFUNCTION |