Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0101-87: Lost Communication with TCM Missing Message; DTC U0114-87: Lost Communication with Four-Wheel Drive Clutch Control Module Missing Message; DTC U0126-87: Lost Communication with Steering Angle Sensor Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module "A" Missing Message; DTC U0131-87: Lost Communication with Power Steering Control Module "A" Missing Message; DTC U0137-87: Lost Communication With Trailer Brake Control Module Missing Message; DTC U0139-87: Lost Communication with Suspension Control Module "B" Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0155-87: Lost Communication with Instrument Panel Cluster (IPC) Control Module Missing Message; DTC U1106-87: Lost Communication with Electric Parking Brake Module Missing Message [12/2024 - ]: Procedure
- CLEAR DTC
Result:
NEXT
See step 2
- CHECK FOR DTCs
Pre-procedure1
- Make sure that the DTC detection conditions are met.
HINT:
If the detection conditions are not met, the system cannot detect the malfunction.
- Check for DTCs.
Chassis > Front Recognition Camera > Trouble Codes
Result
Result Proceed to DTCs are not output A U0100-87, U0101-87, U0114-87, U0126-87, U0129-87, U0131-87, U0137-87, U0139-87, U0140-87, U0155-87 or U1106-87 is output B None of the above conditions are met C
Post-procedure1
- None
Result:
A
USE SIMULATION METHOD TO CHECK
Refer to METHOD TO SIMULATE PROBLEM SYMPTOMS [12/2024 - ]
Result:
B
GO TO REFER TO "CAN COMMUNICATION SYSTEM"
Result:
C
GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2024 - ]
- Make sure that the DTC detection conditions are met.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.