P0128

WarningCooling

What This Code Means

Coolant Temperature Below Thermostat Regulating Temperature

Possible Causes

  • •Problem with the CT sensor or leads

Suggested Actions

  1. 1Check CT sensor leads. Refer to the Coolant Temperature Sensor Troubleshooting section
  2. 2Replace CT sensor. Refer to the Coolant Temperature (CT) Sensor section

Related Discovery Energy, LLC (Rehlko) Fault Codes

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