DTC Combination Table (Open Or Short In Bus 1, Past Communication Error) [07/2022 -
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2024 Lexus UX 250h, 2023 Lexus UX 250h, 2022 Lexus UX 250h, 2021 Lexus UX 250h, and 2020 Lexus UX 250h. However, it is still accessible from the selected car via links, so may be relevant.
- If DTCs indicating a past communication error of an ECU or sensor connected to Bus 1 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.
HINT:
- Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
- If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
- ◦: DTC is output.
- -: DTC is not output.
- *1: DTC U0073 may be stored when communication is lost.
- *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
- If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
- If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
- Trouble Mode Open in CAN branch line(s) Output ECU Output DTC Clearance Warning ECU Communication Stop Mode
Refer to Clearance Warning ECU Communication Stop Mode [10/2018 - ]Front Camera Module Communication Stop Mode
Refer to Front Camera Module Communication Stop Mode [07/2022 - ]Millimeter Wave Radar Sensor Communication Stop Mode
Refer to Millimeter Wave Radar Sensor Communication Stop Mode [10/2018 - ]Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - - - Clearance Warning ECU Assembly U0100-87 ◦ - - U0125-87 ◦ - - U0126-87 ◦ - - U0129-87 ◦ - - U0140-87 ◦ - - U0151-87 ◦ - - U0155-87 ◦ - - U0164-87 ◦ - - U0293-87 ◦ - - Forward Recognition Camera U0125-87 - ◦ - U0126-87 - ◦ - U0129-87 - ◦ - U0131-87 - ◦ - U0140-87 - ◦ - U0155-87 - ◦ - U0293-87 - ◦ - Millimeter Wave Radar Sensor Assembly - - - - Blind Spot Monitor Sensor LH U0125 - - - U0126 - - - U0129 - - - U0142 - - - U0293 - - - Rear Television Camera Assembly U0126-87 - - - U0129-87 - - - U0140-87 - - - U0163-87 - - - U0293-87 - - - U1110-87 ◦ - - Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - - - Brake Booster with Master Cylinder Assembly U0100 - - - U0120 - - - U0293 - - - Inverter with Converter Assembly U0100-87 - - - U0293-87 - - - U1170-87 - - - Rear Hybrid Motor Control Assembly - - - - Vehicle Approaching Speaker Controller U0129 - - - U0140 - - - U0293 - - - Hybrid Vehicle Control ECU U0100-87 - - - U0110-87 - - - U0164-87 - - - U1107-87 - - - U1170-87 - - - ECM U0110-87 - - - U0293-87 - - - Bus 3 Radio Receiver Assembly*1 U0100-87 - - - U0129-87 - - - U0132-87 - - - U0140-87 - - - U0155-87 - - - U0164-87 - - - U0198-87 - - - U0265-87 - - - U0293-87 - - - Central Gateway ECU (Network Gateway ECU)*2 - - - - DCM (Telematics Transceiver) U0140-87 - - - U0155-87 - - - U0163-87 - - - Stereo Component Equalizer Assembly U0129 - - - U0142 - - - U0293 - - - Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - - - Brake Booster with Master Cylinder Assembly U0124 - - - U0126 - - - U0128 - - - U0151 - - - U0293 - - - Hybrid Vehicle Control ECU U0104-87 - ◦ - U0122-87 - - - U0126-87 - - - U0129-87 - - - U0140-87 - - - U0151-87 - - - U0293-87 - - - Brake Actuator Assembly U0125-87 - - - U0129-87 - - - U0140-87 - - - U0293-87 - - - ECM U0129-87 - - - Occupant Detection ECU U0125 - - - U0129 - - - Absorber Control ECU U0101 - - - U0122 - - - U0124 - - - U0126 - - - U0293 - - - Tire Pressure ECU and Receiver U0129 - - - Power Steering ECU with Motor Assembly U0100 - - - U0129 - - - U023A - ◦ - U0293 - - - Steering Sensor - - - - Airbag ECU Assembly U0154 - - - U023A - ◦ - Bus 5 Air Conditioning Amplifier Assembly U0100 - - - U0131 - - - U0142 - - - U0151 - - - U0155 - - - U0163 - - - U0293 - - - Central Gateway ECU (Network Gateway ECU)*2 - - - - Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - - - U0142 - - - U0155 - - - U0230 - - - U0293 - - - Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - - - U0140 - - - U0155 - - - U0293 - - - Main Body ECU (Multiplex Network Body ECU) U0100 - - - U0101 - - - U0120 - - - U0126 - - - U0129 - - - U0151 - - - U0155 - - - U0163 - - - U0164 - - - U0182 - - - U0199 - - - U0200 - - - U0208 - - - U0230 - - - U023A - ◦ - U0293 - - - U0327 - - - U1106 - - - U1115 - - - Outer Mirror Control ECU Assembly RH U0142 - - - Meter Mirror Sub-assembly U0100-87 - - - U0129-87 - - - U0140-87 - - - U0155-87 - - - U0163-87 - - - U0164-87 - - - U023A-87 - ◦ - U0293-87 - - - U1110-87 ◦ - - No. 1 Headlight ECU Sub-assembly LH*1 U0100 - - - U0101 - - - U0126 - - - U0129 - - - U0142 - - - U0155 - - - U0242 - - - U0293 - - - No. 1 Headlight ECU Sub-assembly RH*1 U0126 - - - U0142 - - - U0155 - - - U0182 - - - Multiplex Tilt and Telescopic ECU U0142 - - - U0155 - - - U0208 - - - Bus 5 Multiplex Network Door ECU U0101-87 - - - U0129-87 - - - U0140-87 - - - U0155-87 - - - U1117-87 - - - Outer Mirror Control ECU Assembly LH U0142 - - - Position Control ECU Assembly LH - - - - Combination Meter Assembly U0100-87 - - - U0114-87 - - - U0127-87 - - - U0129-87 - - - U0131-87 - - - U0132-87 - - - U0140-87 - - - U0151-87 - - - U0163-87 - - - U0164-87 - - - U0168-87 - - - U0182-87 - - - U0230-87 - - - U0233-87 - - - U023A-87 - ◦ - U0293-87 - - - U1104-87 - ◦ - U1106-87 - - - U1110-87 ◦ - - U1112-87 - - - U1133-87 - - - - Trouble Mode Open in CAN branch line(s) Output ECU Output DTC Blind Spot Monitor Sensor Communication Stop Mode
Refer to Blind Spot Monitor Sensor Communication Stop Mode [07/2022 - ]Rear Television Camera Communication Stop Mode
Refer to Rear Television Camera Communication Stop Mode [07/2022 - ]Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - - Clearance Warning ECU Assembly U0100-87 - - U0125-87 - - U0126-87 - - U0129-87 - - U0140-87 - - U0151-87 - - U0155-87 - - U0164-87 - - U0293-87 - - Forward Recognition Camera U0125-87 - - U0126-87 - - U0129-87 - - U0131-87 - - U0140-87 - - U0155-87 - - U0293-87 - - Millimeter Wave Radar Sensor Assembly - - - Blind Spot Monitor Sensor LH U0125 ◦ - U0126 ◦ - U0129 ◦ - U0142 ◦ - U0293 ◦ - Rear Television Camera Assembly U0126-87 - ◦ U0129-87 - ◦ U0140-87 - ◦ U0163-87 - ◦ U0293-87 - ◦ U1110-87 - ◦ Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - - Brake Booster with Master Cylinder Assembly U0110 - - U0120 - - U0293 - - Inverter with Converter Assembly U0100-87 - - U0293-87 - - U1170-87 - - Rear Hybrid Motor Control Assembly - - - Vehicle Approaching Speaker Controller U0129 - - U0140 - - U0293 - - Hybrid Vehicle Control ECU U0100-87 - - U0110-87 - - U0164-87 - - U1107-87 - - U1170-87 - - ECM U0110-87 - - U0293-87 - - Bus 3 Radio Receiver Assembly*1 U0100-87 - - U0129-87 - - U0132-87 - - U0140-87 - - U0155-87 - - U0164-87 - - U0198-87 - - U0265-87 - ◦ U0293-87 - - Central Gateway ECU (Network Gateway ECU)*2 - - - DCM (Telematics Transceiver) U0140-87 - - U0155-87 - - U0163-87 - - Stereo Component Equalizer Assembly U0129 - - U0142 - - U0293 - - Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - - Brake Booster with Master Cylinder Assembly U0124 - - U0126 - - U0128 - - U0151 - - U0293 - - Hybrid Vehicle Control ECU U0104-87 - - U0122-87 - - U0126-87 - - U0129-87 - - U0140-87 - - U0151-87 - - U0293-87 - - Brake Actuator Assembly U0125-87 - - U0129-87 - - U0140-87 - - U0293-87 - - ECM U0129-87 - - Occupant Detection ECU U0125 - - U0129 - - Absorber Control ECU U0101 - - U0122 - - U0124 - - U0126 - - U0293 - - Tire Pressure ECU and Receiver U0129 - - Power Steering ECU with Motor Assembly U0100 - - U0129 - - U023A - - U0293 - - Steering Sensor - - - Airbag ECU Assembly U0154 - - U023A - - Bus 5 Air Conditioning Amplifier Assembly U0100 - - U0131 - - U0142 - - U0151 - - U0155 - - U0163 - - U0293 - - Central Gateway ECU (Network Gateway ECU)*2 - - - Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - - U0142 - - U0155 - - U0230 - - U0293 - - Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - - U0140 - - U0155 - - U0293 - - Main Body ECU (Multiplex Network Body ECU) U0100 - - U0101 - - U0120 - - U0126 - - U0129 - - U0151 - - U0155 - - U0163 - - U0164 - - U0182 - - U0199 - - U0200 - - U0208 - - U0230 - - U023A - - U0293 - - U0327 - - U1106 - - U1115 - - Outer Mirror Control ECU Assembly RH U0142 - - Meter Mirror Sub-assembly U0100-87 - - U0129-87 - - U0140-87 - - U0155-87 - - U0163-87 - - U0164-87 - - U023A-87 - - U0293-87 - - U1110-87 - - No. 1 Headlight ECU Sub-assembly LH*1 U0100 - - U0101 - - U0126 - - U0129 - - U0142 - - U0155 - - U0242 - - U0293 - - No. 1 Headlight ECU Sub-assembly RH*1 U0126 - - U0142 - - U0155 - - U0182 - - Multiplex Tilt and Telescopic ECU U0142 - - U0155 - - U0208 - - Bus 5 Multiplex Network Door ECU U0101-87 - - U0129-87 - - U0140-87 - - U0155-87 - - U1117-87 - - Outer Mirror Control ECU Assembly LH U0142 - - Position Control ECU Assembly LH - - - Combination Meter Assembly U0100-87 - - U0114-87 - - U0127-87 - - U0129-87 - - U0131-87 - - U0132-87 - - U0140-87 - - U0151-87 - - U0163-87 - - U0164-87 - - U0168-87 - - U0182-87 - - U0230-87 - - U0233-87 ◦ - U023A-87 - - U0293-87 - - U1104-87 - - U1106-87 - - U1110-87 - - U1112-87 - - U1133-87 - - - Trouble Mode Open in CAN main bus line(s) Output ECU Output DTC Central Gateway ECU (Network Gateway ECU)
(CA1H and CA1L Terminal)No. 2 CAN junction connector to No. 8 CAN junction connector No. 2 CAN junction terminal (P and N) Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - - - Clearance Warning ECU Assembly U0100-87 ◦ - - U0125-87 ◦ - - U0126-87 ◦ - - U0129-87 ◦ - - U0140-87 ◦ - - U0151-87 ◦ - - U0155-87 ◦ - - U0164-87 ◦ - - U0293-87 ◦ - - Forward Recognition Camera U0125-87 ◦ - - U0126-87 ◦ - - U0129-87 ◦ - - U0131-87 ◦ - - U0140-87 ◦ - - U0155-87 ◦ - - U0293-87 ◦ - - Millimeter Wave Radar Sensor Assembly - - - - Blind Spot Monitor Sensor LH U0125 ◦ ◦ - U0126 ◦ ◦ - U0129 ◦ ◦ - U0142 ◦ ◦ - U0293 ◦ ◦ - Rear Television Camera Assembly U0126-87 ◦ ◦ - U0129-87 ◦ ◦ - U0140-87 ◦ ◦ - U0163-87 ◦ ◦ - U0293-87 ◦ ◦ - U1110-87 - ◦ - Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - - - Brake Booster with Master Cylinder Assembly U0100 - - - U0120 - - - U0293 - - - Inverter with Converter Assembly U0100-87 - - - U0293-87 - - - U1170-87 - - - Rear Hybrid Motor Control Assembly - - - - Vehicle Approaching Speaker Controller U0129 - - - U0140 - - - U0293 - - - Hybrid Vehicle Control ECU U0100-87 - - - U0110-87 - - - U0164-87 - - - U1107-87 - - - U1170-87 - - - ECM U0110-87 - - - U0293-87 - - - Bus 3 Radio Receiver Assembly*1 U0100-87 - - - U0129-87 - - - U0132-87 - - - U0140-87 - - - U0155-87 - - - U0164-87 - - - U0198-87 - - - U0265-87 ◦ - - U0293-87 - - - Central Gateway ECU (Network Gateway ECU)*2 - - - - DCM (Telematics Transceiver) U0140-87 - - - U0155-87 - - - U0163-87 - - - Stereo Component Equalizer Assembly U0129 - - - U0142 - - - U0293 - - - Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - - - Brake Booster with Master Cylinder Assembly U0124 - - - U0126 - - - U0128 - - - U0151 - - - U0293 - - - Hybrid Vehicle Control ECU U0104-87 ◦ - - U0122-87 - - - U0126-87 - - - U0129-87 - - - U0140-87 - - - U0151-87 - - - U0293-87 - - - Brake Actuator Assembly U0125-87 - - - U0129-87 - - - U0140-87 - - - U0293-87 - - - ECM U0129-87 - - - Occupant Detection ECU U0125 - - - U0129 - - - Absorber Control ECU U0101 - - - U0122 - - - U0124 - - - U0126 - - - U0293 - - - Tire Pressure ECU and Receiver U0129 - - - Power Steering ECU with Motor Assembly U0100 - - - U0129 - - - U023A ◦ - - U0293 ◦ - - Steering Sensor - - - - Airbag ECU Assembly U0154 - - - U023A ◦ - - Bus 5 Air Conditioning Amplifier Assembly U0100 - - - U0131 - - - U0142 - - - U0151 ◦ - - U0155 - - - U0163 - - - U0293 - - - Central Gateway ECU (Network Gateway ECU)*2 - - - - Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - - - U0142 - - - U0155 - - - U0230 - - - U0293 - - - Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - - - U0140 - - - U0155 - - - U0293 - - - Main Body ECU (Multiplex Network Body ECU) U0100 - - - U0101 - - - U0120 - - - U0126 - - - U0129 - - - U0151 - - - U0155 - - - U0163 - - - U0164 - - - U0182 - - - U0199 - - - U0200 - - - U0208 - - - U0230 - - - U023A ◦ - - U0293 - - - U0327 - - - U1106 - - - U1115 - - - Outer Mirror Control ECU Assembly RH U0142 - - - Meter Mirror Sub-assembly U0100-87 - - - U0129-87 - - - U0140-87 - - - U0155-87 - - - U0163-87 - - - U0164-87 - - - U023A-87 ◦ - - U0293-87 - - - U1110-87 ◦ - - No. 1 Headlight ECU Sub-assembly LH*1 U0100 - - - U0101 - - - U0126 - - - U0129 - - - U0142 - - - U0155 - - - U0242 - - - U0293 - - - No. 1 Headlight ECU Sub-assembly RH*1 U0126 - - - U0142 - - - U0155 - - - U0182 - - - Multiplex Tilt and Telescopic ECU U0142 - - - U0155 - - - U0208 - - - Bus 5 Multiplex Network Door ECU U0101-87 - - - U0129-87 - - - U0140-87 - - - U0155-87 - - - U1117-87 - - - Outer Mirror Control ECU Assembly LH U0142 - - - Position Control ECU Assembly LH - - - - Combination Meter Assembly U0100-87 - - - U0114-87 - - - U0127-87 - - - U0129-87 - - - U0131-87 - - - U0132-87 - - - U0140-87 - - - U0151-87 - - - U0163-87 - - - U0164-87 - - - U0168-87 - - - U0182-87 - - - U0230-87 - - - U0233-87 ◦ ◦ - U023A-87 ◦ - - U0293-87 - - - U1104-87 ◦ - - U1106-87 - - - U1110-87 ◦ - - U1112-87 - - - U1133-87 - - - - Trouble Mode CAN bus lines short circuit or short to GND Output ECU Output DTC CANH to CANL CANH Short to Ground CANL Short to Ground Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - - - Clearance Warning ECU Assembly U0100-87 ◦ ◦ ◦ U0125-87 ◦ ◦ ◦ U0126-87 ◦ ◦ ◦ U0129-87 ◦ ◦ ◦ U0140-87 ◦ ◦ ◦ U0151-87 ◦ ◦ ◦ U0155-87 ◦ ◦ ◦ U0164-87 ◦ ◦ ◦ U0293-87 ◦ ◦ ◦ Forward Recognition Camera U0125-87 ◦ ◦ ◦ U0126-87 ◦ ◦ ◦ U0129-87 ◦ ◦ ◦ U0131-87 ◦ ◦ ◦ U0140-87 ◦ ◦ ◦ U0155-87 ◦ ◦ ◦ U0293-87 ◦ ◦ ◦ Millimeter Wave Radar Sensor Assembly - - - - Blind Spot Monitor Sensor LH U0125 ◦ ◦ ◦ U0126 ◦ ◦ ◦ U0129 ◦ ◦ ◦ U0142 ◦ ◦ ◦ U0293 ◦ ◦ ◦ Rear Television Camera Assembly U0126-87 ◦ ◦ ◦ U0129-87 ◦ ◦ ◦ U0140-87 ◦ ◦ ◦ U0163-87 ◦ ◦ ◦ U0293-87 ◦ ◦ ◦ U1110-87 ◦ ◦ ◦ Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - - - Brake Booster with Master Cylinder Assembly U0100 - - - U0120 - - - U0293 - - - Inverter with Converter Assembly U0100-87 - - - U0293-87 - - - U1170-87 - - - Rear Hybrid Motor Control Assembly - - - - Vehicle Approaching Speaker Controller U0129 - - - U0140 - - - U0293 - - - Hybrid Vehicle Control ECU U0100-87 - - - U0110-87 - - - U0164-87 - - - U1107-87 - - - U1170-87 - - - ECM U0110-87 - - - U0293-87 - - - Bus 3 Radio Receiver Assembly*1 U0100-87 - - - U0129-87 - - - U0132-87 - - - U0140-87 - - - U0155-87 - - - U0164-87 - - - U0198-87 - - - U0265-87 ◦ ◦ ◦ U0293-87 - - - Central Gateway ECU (Network Gateway ECU)*2 - - - - DCM (Telematics Transceiver) U0140-87 - - - U0155-87 - - - U0163-87 - - - Stereo Component Equalizer Assembly U0129 - - - U0142 - - - U0293 - - - Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - - - Brake Booster with Master Cylinder Assembly U0124 - - - U0126 - - - U0128 - - - U0151 - - - U0293 - - - Hybrid Vehicle Control ECU U0104-87 ◦ ◦ ◦ U0122-87 - - - U0126-87 - - - U0129-87 - - - U0140-87 - - - U0151-87 - - - U0293-87 - - - Brake Actuator Assembly U0125-87 - - - U0129-87 - - - U0140-87 - - - U0293-87 - - - ECM U0129-87 - - - Occupant Detection ECU U0125 - - - U0129 - - - Absorber Control ECU U0101 - - - U0122 - - - U0124 - - - U0126 - - - U0293 - - - Tire Pressure ECU and Receiver U0129 - - - Power Steering ECU with Motor Assembly U0100 - - - U0129 - - - U023A ◦ ◦ ◦ U0293 ◦ ◦ ◦ Steering Sensor - - - - Airbag ECU Assembly U0154 - - - U023A ◦ ◦ ◦ Bus 5 Air Conditioning Amplifier Assembly U0100 - - - U0131 - - - U0142 - - - U0151 - - - U0155 - - - U0163 - - - U0293 - - - Central Gateway ECU (Network Gateway ECU)*2 - - - - Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - - - U0142 - - - U0155 - - - U0230 - - - U0293 - - - Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - - - U0140 - - - U0155 - - - U0293 - - - Main Body ECU (Multiplex Network Body ECU) U0100 - - - U0101 - - - U0120 - - - U0126 - - - U0129 - - - U0151 - - - U0155 - - - U0163 - - - U0164 - - - U0182 - - - U0199 - - - U0200 - - - U0208 - - - U0230 - - - U023A ◦ ◦ ◦ U0293 - - - U0327 - - - U1106 - - - U1115 - - - Outer Mirror Control ECU Assembly RH U0142 - - - Meter Mirror Sub-assembly U0100-87 - - - U0129-87 - - - U0140-87 - - - U0155-87 - - - U0163-87 - - - U0164-87 - - - U023A-87 ◦ ◦ ◦ U0293-87 - - - U1110-87 ◦ ◦ ◦ No. 1 Headlight ECU Sub-assembly LH*1 U0100 - - - U0101 - - - U0126 - - - U0129 - - - U0142 - - - U0155 - - - U0242 - - - U0293 - - - No. 1 Headlight ECU Sub-assembly RH*1 U0126 - - - U0142 - - - U0155 - - - U0182 - - - Multiplex Tilt and Telescopic ECU U0142 - - - U0155 - - - U0208 - - - Bus 5 Multiplex Network Door ECU U0101-87 - - - U0129-87 - - - U0140-87 - - - U0155-87 - - - U1117-87 - - - Outer Mirror Control ECU Assembly LH U0142 - - - Position Control ECU Assembly LH - - - - Combination Meter Assembly U0100-87 - - - U0114-87 - - - U0127-87 - - - U0129-87 - - - U0131-87 - - - U0132-87 - - - U0140-87 - - - U0151-87 - - - U0163-87 - - - U0164-87 - - - U0168-87 - - - U0182-87 - - - U0230-87 - - - U0233-87 ◦ ◦ ◦ U023A-87 ◦ ◦ ◦ U0293-87 - - - U1104-87 ◦ ◦ ◦ U1106-87 - - - U1110-87 ◦ ◦ ◦ U1112-87 - - - U1133-87 - - -