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Why would the check engine light come on after you replaced everything that the obd2 said was wrong with it and you replaced everything and the light came back on and its the same stuff you replaced?
Wiki User
∙ 14y ago
Did you remember to clear the codes from the computer? OBD II systems have the ability to retain trouble codes even if the battery is disconnected so you will need a code scanner to retrieve the codes to have them cleared out so the computer knows the problem has been addressed.
Wiki User
∙ 14y ago
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