Service Engine light - 128
so i got a service engine soon light on couple days ago, went to autozone to check the code, they said it is code 128, something to do with coolant or thermostat. car is 07 335i with 45k miles, drives and feels normal after the light on. should i take it to shop to get them check? anyone got the same code when their thermostat fail or coolant low?
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