The vehicle immobilizer system does not recognize the key being used.
Informational only. Consult a qualified mechanic.
Have the key reprogrammed. May need dealer assistance.
The B1601 OBD-II diagnostic trouble code (DTC) indicates: pats key not programmed. This is a high-severity body code that your vehicle's onboard diagnostics system triggers when the vehicle immobilizer system does not recognize the key being used. If your check engine light is on with this code, the vehicle is generally safe to drive, but you should have it inspected soon.
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