CAN COMMUNICATION SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Diagnostic Trouble Code Chart
DTC No. Detection Item Trouble Area Note Link
U0104 Lost Communication with Driving Support ECU

  • Driving support ECU assembly branch line or connector

  • Power source circuit of driving support ECU assembly

  • Driving support ECU assembly ground circuit

  • Driving support ECU assembly

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System).

Click here

U0129 Lost Communication with Skid Control ECU

  • Skid control ECU (brake actuator assembly) branch line or connector

  • Power source circuit of skid control ECU (brake actuator assembly)

  • Skid control ECU (brake actuator assembly) ground circuit

  • Skid control ECU (brake actuator assembly)

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 19.

Click here

U0130 Lost Communication with VGRS

  • Front steering control ECU branch line or connector

  • Power source circuit of front steering control ECU

  • Front steering control ECU ground circuit

  • Front steering control ECU

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 19.

Click here

U0131 Lost Communication with Power Steering Control Module

  • Power steering ECU assembly branch line or connector

  • Power source circuit of power steering ECU assembly

  • Power steering ECU assembly ground circuit

  • Power steering ECU assembly

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 19.

Click here

U0132 Lost Communication with Suspension Control ECU

  • Absorber control ECU branch line or connector

  • Power source circuit of absorber control ECU

  • Absorber control ECU ground circuit

  • Absorber control ECU

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System) and sub bus 19 (w/ VGRS System).

Click here

U0134 Lost Communication with DRS Module

  • Rear steering control ECU branch line or connector

  • Power source circuit of rear steering control ECU

  • Rear steering control ECU ground circuit

  • Rear steering control ECU

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 19.

Click here

U0182 Lost Communication with Lighting Control Module Front

  • Headlight light control ECU sub-assembly LH branch line or connector

  • Power source circuit of headlight light control ECU sub-assembly LH

  • Headlight light control ECU sub-assembly LH ground circuit

  • Headlight light control ECU sub-assembly LH

Tech Tips

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.

Click here

U0198 Lost Communication with Telematic Control Module

  • Telematics transceiver branch line or connector

  • Power source circuit of telematics transceiver

  • Telematics transceiver ground circuit

  • Telematics transceiver

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2.

Click here

U0199 Lost Communication with "Door Control Module A"

  • Outer mirror control ECU assembly (for front passenger side) branch line or connector (for LHD)

  • Power source circuit of outer mirror control ECU assembly (for front passenger side) (for LHD)

  • Outer mirror control ECU assembly (for front passenger side) ground circuit (for LHD)

  • Outer mirror control ECU assembly (for front passenger side) (for LHD)

  • Outer mirror control ECU assembly (for driver side) branch line or connector (for RHD)

  • Power source circuit of outer mirror control ECU assembly (for driver side) (for RHD)

  • Outer mirror control ECU assembly (for driver side) ground circuit (for RHD)

  • Outer mirror control ECU assembly (for driver side) (for RHD)

Tech Tips

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.

Click here

U0200 Lost Communication with "Door Control Module B"

  • Outer mirror control ECU assembly (for driver side) branch line or connector (for LHD)

  • Power source circuit of outer mirror control ECU assembly (for driver side) (for LHD)

  • Outer mirror control ECU assembly (for driver side) ground circuit (for LHD)

  • Outer mirror control ECU assembly (for driver side) (for LHD)

  • Outer mirror control ECU assembly (for front passenger side) branch line or connector (for RHD)

  • Power source circuit of outer mirror control ECU assembly (for front passenger side) (for RHD)

  • Outer mirror control ECU assembly (for front passenger side) ground circuit (for RHD)

  • Outer mirror control ECU assembly (for front passenger side) (for RHD)

Tech Tips

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.

Click here

U0208 Lost Communication with "Seat Control Module A"

  • Position control ECU and switch assembly LH branch line or connector

  • Power source circuit of position control ECU and switch assembly LH

  • Position control ECU and switch assembly LH ground circuit

  • Position control ECU and switch assembly LH

Tech Tips

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.

Click here

U0209 Lost Communication with "Seat Control Module B"

  • Position control ECU and switch assembly RH branch line or connector

  • Power source circuit of position control ECU and switch assembly RH

  • Position control ECU and switch assembly RH ground circuit

  • Position control ECU and switch assembly RH

Tech Tips

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.

Click here

U0233 Lost Communication with Blind Spot Monitor Master Module

  • Blind spot monitor sensor LH branch line or connector

  • Power source circuit of blind spot monitor sensor LH

  • Blind spot monitor sensor LH ground circuit

  • Blind spot monitor sensor LH

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System).

Click here

U0235 Lost Communication with Cruise Control Front Distance Range Sensor

  • Open or short in sub bus 13 main line or connector

  • Millimeter wave radar sensor assembly

  • Power source circuit of millimeter wave radar sensor assembly

  • Millimeter wave radar sensor assembly ground circuit

Tech Tips

The driving support ECU assembly stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 13.

Click here

U023A Lost Communication with Front Camera Module

  • Lane departure warning camera branch line or connector

  • Power source circuit of lane departure warning camera

  • Lane departure warning camera ground circuit

  • Lane departure warning camera

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System).

Click here

U1002 Lost Communication with Gateway Module (Sensor Bus)

  • Open or short in sub bus 13 main line or connector

  • Driving support ECU assembly

  • Power source circuit of driving support ECU assembly

  • Driving support ECU assembly ground circuit

  • Millimeter wave radar sensor assembly

  • Power source circuit of millimeter wave radar sensor assembly

  • Millimeter wave radar sensor assembly ground circuit

Tech Tips

The driving support ECU assembly stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 13.

Click here

U1002 Lost Communication with Gateway Module (Main Body ECU)

  • Open or short in sub bus 1 main lines or connector

  • Short in sub bus 1 branch lines or connector

  • Main body ECU (multiplex network body ECU)

  • Outer mirror control ECU assembly (for driver side) (w/ Seat Position Memory System)

  • Outer mirror control ECU assembly (for front passenger side) (w/ Seat Position Memory System)

  • Position control ECU and switch assembly LH (w/ Seat Position Memory System)

  • Position control ECU and switch assembly RH (w/ Seat Position Memory System)

  • Multiplex tilt and telescopic ECU (w/ Power Tilt and Power Telescopic System)

  • Headlight light control ECU sub-assembly LH (for Triple Beam Headlight)

  • Open or short in No. 5 CAN junction connector (for LHD)

  • Open or short in No. 6 CAN junction connector (for RHD)

  • Open or short in No. 9 CAN junction connector

  • Open or short in No. 10 CAN junction connector

  • Open or short in No. 1 CAN junction terminal

Tech Tips

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.

Click here

U1002 Lost Communication with Gateway Module

  • Open or short in sub bus 19 main lines or connector

  • Short in sub bus 19 branch lines or connector

  • Network gateway ECU

  • Skid Control ECU (Brake Actuator Assembly)

  • Absorber Control ECU

  • Power Steering ECU Assembly

  • Rear Steering Control ECU

  • Front Steering Control ECU

  • Open or short in No. 7 CAN junction connector (for LHD)

  • Open or short in No. 8 CAN junction connector (for RHD)

  • Open or short in No. 9 CAN junction connector

  • Open or short in No. 3 CAN junction terminal

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 19.

Click here

U1002 Lost Communication with Gateway Module (Network Gateway ECU)

  • Open or short in sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System) main lines or connector

  • Short in sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System) branch lines or connector

  • Network gateway ECU

  • Absorber control ECU (w/ AVS System)

  • Driving support ECU assembly (w/ Pre-crash Safety System)

  • Clearance warning ECU assembly (w/ LEXUS Parking Assist-sensor System)

  • Option connector (bus buffer ECU) (w/ Option Connector)

  • Lane departure warning camera (w/ Lane Departure Alert System)

  • Blind spot monitor sensor LH (w/ Blind Spot Monitor System)

  • Telematics transceiver (w/ Telematics Transceiver)

    (for LHD)

  • Open or short in No. 5 CAN junction connector (for LHD)

  • Open or short in No. 6 CAN junction connector (for RHD)

  • Open or short in No. 7 CAN junction connector (for LHD)

  • Open or short in No. 8 CAN junction connector (for RHD)

  • Open or short in No. 9 CAN junction connector

  • Open or short in No. 11 CAN junction connector

  • Open or short in No. 2 CAN junction terminal

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System).

Click here

U1110 Lost Communication with Clearance Sonar Module

  • Clearance warning ECU assembly branch line or connector

  • Power source circuit of clearance warning ECU assembly

  • Clearance warning ECU assembly ground circuit

  • Clearance warning ECU assembly

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System).

Click here

U1115 Lost Communication with Tilt & Telescopic Module

  • Multiplex tilt and telescopic ECU branch line or connector

  • Power source circuit of multiplex tilt and telescopic ECU

  • Multiplex tilt and telescopic ECU ground circuit

  • Multiplex tilt and telescopic ECU

Tech Tips

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.

Click here

U1117 Lost Communication with Accessory Gateway

  • Option connector (bus buffer ECU) branch line or connector

  • Option Connector (bus buffer ECU)

Tech Tips

The network gateway ECU stores DTCs when it detects a communication stop or network communication error for ECUs connected to sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System).

Click here