Diagnostic Trouble Code Chart
WARNING: This page is about a different car, the 2003 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE
| DTC No. (SEE PAGE) | Circuit Inspection | Trouble Area |
|---|---|---|
| B2780 | Key unlock warning switch malfunction |
|
| B2784 | Transponder key coil malfunction | Transponder key amplifier with coil |
| B2793 | Transponder chip malfunction | Key |
| B2794 | Unmatched encryption code |
|
| B2795 | Unmatched key code |
|
| B2796 | No communication in immobiliser system |
|
| B2797 | Communication malfunction No.1 |
|
| B2798 | Communication malfunction No.2 |
|
| B2799/99 | Engine immobiliser system malfunction |
|
HINT:
To reduce the unnecessary exchange of Transponder key ECU, check that a trouble occurs with the original Transponder key ECU at the time of exchanging Transponder key ECU and the trouble will disappear with a new Transponder key ECU.