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 C1A02: Vehicle Information Not Obtained: Description
When a new driving support ECU is installed, it receives vehicle specification information (destination, steering wheel position, 2WD or AWD information, etc.) from the main body ECU and ECM and memorizes the information.
DTC C1A02 is stored when the driving support ECU receives the vehicle specification information from the main body ECU but cannot record it.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| C1A02 | Inconsistent vehicle specification information between the main body ECU and driving support ECU continues for 1 second or more. | Driving support ECU |
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.