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Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2004 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC TROUBLE CODE CHART

DTC Description
DTC 1-3, 1-4, 1-5, 1-6, 1-7, 1-8, 1-9, 1-10:  ALL LEDS FAILED OVER CURRENT TEST AT IGNITION ON (RED, YELLOW, GREEN)
DTC 2-1, 2-2:  ECU FAILS TO WRITE EEPROM CORRECTLY FOR 3RD TIME IN A ROW, NONVOLATILE EEPROM CHECKLESS ERROR
DTC 3-5:  DSP DOES NOT RESPOND TO 255 CONSECUTIVE ECU STATUS
DTC 5-5:  ECU DOES NOT RECEIVE SUPER PACKET MESSAGE FROM GPS MODULE FOR PERIOD OF 10S WHILE GPS IS POWERED ON
DTC 7-1:  TONE IC RESPONSE ERROR
DTC 8-1, 8-2:  ECU RECEIVED A DIAGNOSTICS ERROR FROM TRANSCEIVER, TRANSCEIVER DOES NOT RESPOND TO ANY REQUEST FOR A PERIOD OF 10S
DTC 9-1, 9-2:  GPS ANTENNA IS SHORTED/OPEN
DTC 9-3:  NO GPS 2D/3D FIX WHILE MOVING MORE THAN 10 MILES
DTC 10-1, 10-2, 10-3, 10-4:  SERVICES, PLAY OR RECORD, EMERGENCY, VOLUME +, OR VOLUME -IS REPORTED PRESSED FOR MORE THAN 15S/10S
DTC 11-1:  BEAN 10S LOSS OF COMMUNICATION ERROR
DTC 11-2:  DISCRETE AIRBAG FAULT
DTC 12-1:  BACK-UP BATTERY FAILED LOAD TEST 10S AFTER IGNITION SWITCH ON

HINT:

For each diagnostic check, the completion of diagnostic massage is followed by a "diagnostics complete voice message.

Fig 1: DTC Trouble Area Chart
G01444753Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The voice message "Code one, LED failure" is also played.