Diagnostic Trouble Code Chart

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

If a trouble code is displayed during the DTC check, inspect the trouble areas listed for that code. For details code, refer to table below.

Lighting system:

DIAGNOSTIC TROUBLE CODE CHART - LIGHTING SYSTEM

DTC Code	Detection Item	Trouble Area
B1244	Light Sensor Circuit Malfunction	Automatic light control sensor Main body ECU Harness or connector
B2402	Transistor Relay Overload Malfunction	Rear combination light assembly LH Rear combination light assembly RH Rear light assembly LH Rear light assembly RH Center stop light assembly License plate light assembly Rear junction block ECU Harness or connector
B2410	Headlight Swivel Motor LH Communication Malfunction	AFS ECU Headlight swivel motor LH Harness or connector
B2411	Headlight Swivel Motor RH Communication Malfunction	AFS ECU Headlight swivel motor RH Harness or connector
B2412	Headlight Swivel Motor LH Malfunction	Headlight swivel motor LH Harness or connector AFS ECU
B2413	Headlight Swivel Motor RH Malfunction	Headlight swivel motor RH Harness or connector AFS ECU
B2414	Steering Position Sensor Malfunction	Steering angle sensor AFS ECU
B2415	Vehicle Speed Sensor Malfunction	Skid control ECU AFS ECU
B2416	Height Control Sensor Malfunction	Suspension control ECU Harness or connector AFS ECU
B2417	Headlight Beam Level Control Motor LH Malfunction	Headlight leveling motor LH Harness or connector AFS ECU
B2418	Headlight Beam Level Control Motor RH Malfunction	Headlight leveling motor RH Harness or connector AFS ECU
B2420	AFS ECU Malfunction	AFS ECU
B2423	AFS ECU Installation Error	AFS ECU
B2424	Headlight Leveling Motor LH Communication Malfunction	Headlight leveling motor LH Harness or connector AFS ECU
B2425	Headlight Leveling Motor RH Communication Malfunction	Headlight leveling motor RH Harness or connector AFS ECU
B2427	CAN Communication Malfunction	CAN communication system AFS ECU
B2429	Steering Wheel Position Undecided	Main body ECU AFS ECU
B2480	Headlight Hi LH Circuit Transistor	Headlight assembly LH No 1 headlight bulb LH Multiplex network front light ECU (Front controller) Harness or connector
B2481	Headlight Hi RH Circuit Transistor	Headlight assembly RH No 1 headlight bulb RH Multiplex network front light ECU (Front controller) Harness or connector
B2482	Clearance Light Circuit Transistor	Headlight assembly Clearance light bulb Multiplex network front light ECU (Front controller) Harness or connector
B2430	LED Headlight LH Circuit Malfunction	Headlight control ECU LH Headlight assembly LH Multiplex network front light ECU (Front controller) AFS ECU Engine room No 2 relay block Harness or connector
B2431	LED Headlight RH Circuit Malfunction	Headlight control ECU RH Headlight assembly RH Multiplex network front light ECU (Front controller) AFS ECU Engine room No 2 relay block Harness or connector