Fault Codes/Discovery Energy, LLC (Rehlko)/P0117Discovery Energy, LLC (Rehlko)P0117WarningGeneralWhat This Code MeansP0117Possible 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 CodesP0118P0121P0116P0171P0113P0172P0112P0335P0111P0508P0108P0509Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P0117 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about P0117GET THE ANSWERFree account required — we'll bring your question with you.