Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Control Module Communication Bus "A" Off (U0073,U0155)
DESCRIPTION
These DTCs are stored when the clearance warning ECU assembly cannot receive and recognize several signals via the CAN communication line.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0073 | Control Module Communication Bus "A" Off | Control module communication bus off | CAN communication system |
| U0155 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | Lost communication with the combination meter assembly | CAN communication system |
HINT:
When 2 or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harnesses of each ECU.
PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Clear the DTCs
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(b) Check for CAN communication system DTCs
Click here
| Result | Proceed to |
|---|---|
| CAN communication system DTCs are output | A |
| No CAN communication system DTCs are output | B |
| A |  | GO TO CAN COMMUNICATION SYSTEM |
| B | | USE SIMULATION METHOD TO CHECK |
Rear Sensor Communication Malfunction (C1AED)
DESCRIPTION This DTC is stored when there is an open or short circuit in the communication line between the rear sensors and the ECU, or when there is a malfunction in a rear sensor. DTC No. Dete ...
CAN Communication Failure (Message Registry) (U1000)
DESCRIPTION If DTC U1000 is stored frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again even if the DTC is not output when rechecking for DTCs. DTC ...
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Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Engine Unit: Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during engine unit removal/installation are shown below. Necessary Procedure After Parts Removed/Installed/Rep ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Blind Spot Monitor System: Steering Angle Sensor (C1A47)
DESCRIPTION The blind spot monitor sensor receives steering angle signals from the steering angle sensor via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area C1A47 Steering Angle Sensor A fail flag is transmitted from the steering angle sensor
Stee ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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