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Hyundai atoz Solution for P1805 immobilizer EEPROM error VIN mismatch

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P1128 is a check engine issue and P1805 in an immobilizer. The easiest way is to go to a local garage and have the computer reset (clear the codes). The immobilizer is most likely bringing up the engine code. There was probably a miscommunication between the immobilizer and the computer causing the code which then in turn "check engine". Start there...

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P1801 and p1806 codes come up is there a easy fix 2000 accent

P1801:------- Immobilizer Transponder Error. ------------------------------ P1805/P1806:----- EEPROM Error/VIN Mismatch. ------------- In most cases the error 1801 and 1805 comes up together.But error 1806 is very rare.But 1806 and 1805 both are error related to same problem. P1801 and P1805/06 are immobilizer errors. Does your car have an anti-theft
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Hyundai Matrix will not start when damp EOBD codes P-1801 and P-1805

Yes... it's the immobilizer system p1805: Inconsistent data of EEPROM Invalid write operation to EEPROM Not plausible immobilizer indicator stored in the ECM No valid data from SMARTRA after 3 attempts by ECM Invalid tester message or unexpected requests by testerGo to and register. You'll have access to lots of info (technical and otherwise) about your vehicle.

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