Fault Codes/Discovery Energy, LLC (Rehlko)/P0118Discovery Energy, LLC (Rehlko)P0118WarningGeneralWhat This Code MeansP0118Possible Causes•Problem with the CT sensor or leads.Suggested Actions1Check CT sensor leads. Refer to the Coolant Temperature Sensor Troubleshooting section.2Replace CT sensor. Refer to the Coolant Temperature (CT) Sensor section.Related Discovery Energy, LLC (Rehlko) Fault CodesP0121P0171P0117P0172P0116P0335P0113P0508P0112P0509P0111P0563Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P0118 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about P0118GET THE ANSWERFree account required — we'll bring your question with you.