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.
Circuit Description
The DTC is output when an unregistered key is inserted. When this DTC is output, delete DTC and insert the key that the customer used to check that DTC is output. When a key that outputs DTC is found, register this key. When DTC is not output, there is a possibility that the unregistered key has been inserted before (ECM is normal).
- DTC Detecting Condition
No communication. - Trouble Area
Key.
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.