DTC U1103-87: Lost Communication with Stop and Start Control Module Missing Message [11/2021 - 03/2022]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 250, 2024 Lexus NX 250, 2023 Lexus NX 250, and 2022 Lexus NX 250. However, it is still accessible from the selected car via links, so may be relevant.
- CLEAR DTC
- Clear the DTCs.
Powertrain > Engine > Clear DTCs
- Turn the ignition switch off and wait for at least 30 seconds.
Result
Proceed to NEXT
Result:
NEXT
See step 2
- Clear the DTCs.
- CHECK DTC OUTPUT (DTC U1103-87)
- Read the DTCs using the GTS.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to DTC U1103-87 is not output A DTC U1103-87 is output B
Result:
A
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2021 - ]
Result:
B
GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2021 - ]
- Read the DTCs using the GTS.