Lexus NX: 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
(a) Clear the DTCs
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Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Clear DTCs
(b) Check for CAN communication system DTCs
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Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes
| Result | Proceed to |
| No CAN communication system DTCs are output | A |
| CAN communication system DTCs are output | B |
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