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p0128

  1. thermostat stuck open

    Problems, Driver Warnings or DTCs - Chevy Volt
    I just got back one of my Volts from the shop, after showing codes P0128 and P2181. These codes correspond to engine coolant too cold, and faulty thermostat. Running fine now with a new thermostat. The strange thing is that when it happened with my wife driving, she reported seeing a message...
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