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 U0073: Control Module Communication Bus "A" Off; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication With Vehicle Dynamics Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster (IPC) Control Module; DTC U0402: Invalid Data Received from TCM; DTC U0416: Invalid Data Received from Vehicle Dynamics Control Module; DTC U0423: Invalid Data Received from Instrument Panel Cluster Control Module [06/2016 - ]: Description
Refer to CAN communication system for system description (Refer to SYSTEM DESCRIPTION [06/2016 - 03/2017] , or refer to SYSTEM DESCRIPTION [03/2017 - ] ).
| DTC No. | DTC Detection Conditions | Trouble Areas |
|---|---|---|
| U0073 | Bus off state for 0.436 seconds or more. (1 trip detection logic) |
|
| U0101 | No communication between ECM and TCM for 0.5 seconds or more. (1 trip detection logic) |
|
| U0122 | No communication between ECM and skid control ECU for 0.5 seconds or more. (1 trip detection logic) |
|
| U0155 | No communication between ECM and combination meter assembly for 0.5 seconds or more. (1 trip detection logic) |
|
| U0402 | Invalid data received from TCM for 2 seconds or more. (1 trip detection logic) |
|
| U0416 | Invalid data received from skid control ECU for 2 seconds or more. (1 trip detection logic) |
|
| U0423 | Invalid data received from combination meter assembly for 2 seconds or more. (1 trip detection logic) |
|
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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.
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