FixVault

Problem Symptoms Table

ENGINE IMMOBILISER SYSTEM 

PROBLEM SYMPTOMS CHART

Symptom Suspected Area Refer to
Engine does not start 1 Key (Transponder chip malfunction) DTC B2793 TRANSPONDER CHIP MALFUNCTION 
2 Key (Unmatched encryption code) DTC B2794 UNMATCHED ENCRYPTION CODE 
3 Key (Unmatched key code) DTC B2795 UNMATCHED KEY CODE 
4 Key (No communication in immobiliser system) DTC B2796 NO COMMUNICATION IN IMMOBILISER SYSTEM; DTC B2798 COMMUNICATION MALFUNCTION NO. 2 
5 Key (Communication malfunction) DTC B2797 COMMUNICATION MALFUNCTION NO. 1 
6 Transponder key amplifier (Antenna coil open/short) DTC B2784 ANTENNA COIL OPEN/SHORT 
7 Transponder key amplifier (No communication in immobiliser system) DTC B2796 NO COMMUNICATION IN IMMOBILISER SYSTEM; DTC B2798 COMMUNICATION MALFUNCTION NO. 2 
8 Transponder key amplifier (Communication malfunction) DTC B2797 COMMUNICATION MALFUNCTION NO. 1 
9 Transponder key ECU assembly (Key unlock warning switch malfunction) DTC B2780 PUSH SWITCH/KEY UNLOCK WARNING SWITCH MALFUNCTION 
10 Transponder key ECU assembly (Antenna coil open/short) DTC B2784 ANTENNA COIL OPEN/SHORT 
11 Transponder key ECU assembly (No communication in immobiliser system) DTC B2796 NO COMMUNICATION IN IMMOBILISER SYSTEM; DTC B2798 COMMUNICATION MALFUNCTION NO. 2 
12 Transponder key ECU assembly (Communication malfunction) DTC B2797 COMMUNICATION MALFUNCTION NO. 1 
13 Transponder key ECU assembly (Engine immobiliser system malfunction) DTC B2799 ENGINE IMMOBILISER SYSTEM MALFUNCTION