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.
2018 Infiniti QX80 AWDFACTORY OEM SERVICE PROCEDURE
Cruise Control System DTCS
DTC INDEX
| DTC | Description |
|---|---|
| DTC C1A00 | CONTROL UNIT |
| DTC C1A01 | POWER SUPPLY CIRCUIT 1 |
| DTC C1A02 | POWER SUPPLY CIRCUIT 2 |
| DTC C1A12 | RADAR OFF-CENTER |
| DTC C1A16 | RADAR BLOCKED |
| DTC C1A21 | UNIT HIGH TEMP |
| DTC C1A23 | UNIT LOW TEMP |
| DTC C1A39 | STEERING ANGLE SENSOR |
| DTC C1A50 | ADAS CONTROL UNIT |
| DTC U0104 | ADAS CAN 1 |
| DTC U0121 | VDC CAN 2 |
| DTC U0126 | STRG SEN CAN 1 |
| DTC U0405 | ADAS CAN 2 |
| DTC U0415 | VDC CAN 1 |
| DTC U0428 | STRG SEN CAN 2 |
| DTC U1000 | CAN COMM CIRCUIT |
| DTC U1010 | CONTROL UNIT (CAN) |
Factory Service Tools
Use the Manual With the Right Hardware
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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.