Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Diagnostic Trouble Code Chart

B1003

ECU Malfunction

Network gateway ECU

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U0199

Lost Communication with "Door Control Module A"

HINT:

The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1.

U0200

Lost Communication with "Door Control Module B"

HINT:

The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1.

U0208

Lost Communication with "Seat Control Module A"

HINT:

The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1.

U0230

Lost Communication with Rear Gate Module

HINT:

The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1.

U1002

Lost Communication with Gateway Module (Main Body ECU)

HINT:

The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1.

U1115

Lost Communication with Tilt & Telescopic Module

HINT:

The main body ECU (multiplex network body ECU) stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 1.