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 U0322-51: Software Incompatibility with Body Control Module Not Programmed; DTC U0322-57: Software Incompatibility with Body Control Module Invalid/Incompatible Software Component [03/2023 - ]: Procedure
- CHECK FOR DTCs (HEALTH CHECK)
- Using the GTS, perform a health check.
OK
DTCs are not output by any system other than the driver monitor camera system (Driver Monitor Camera Control).
Result
Result Proceed to U0322-51 and U0322-57 are not output by a system other than the driver monitor system A U0322-51 or U0322-57 is output by a system other than the driver monitor system B
Result:
B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [03/2023 - ]
Result:
A
See step 2
- Using the GTS, perform a health check.
- REPLACE DRIVER MONITOR ECU ASSEMBLY
HINT:
Refer to REMOVAL [03/2023 - ]
Result
Proceed to NEXT Result:
NEXT
See step 3
- CLEAR DTC
- Clear the DTCs.
Chassis > Driver Monitor Camera Control > Clear DTCs
- Turn the ignition switch off.
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Clear the DTCs.
- CHECK FOR DTC
- Check for DTCs.
Chassis > Driver Monitor Camera Control > Trouble Codes
Result
Result Proceed to DTCs are not output A DTCs are output B
Result:
A
END (DRIVER MONITOR ECU ASSEMBLY IS DEFECTIVE)
Result:
B
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU). Refer to REMOVAL [03/2023 - ]
- Check for DTCs.
NO RELATED
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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.