Fault Codes/Discovery Energy, LLC (Rehlko)/P2626Discovery Energy, LLC (Rehlko)P2626ErrorGeneralWhat This Code MeansP2626Possible Causes•Problem with the HEGO sensor.Suggested Actions1Troubleshoot the HEGO sensor for bad leads. Refer to the Heated Exhaust Gas Oxygen (HEGO) Sensor Troubleshooting section .2Replace the HEGO sensor. Refer to the Heated Exhaust Gas Oxygen Sensor (HEGO) section .Related Discovery Energy, LLC (Rehlko) Fault CodesP2311P2310P2309P2308P2307P2306P2305P2243P2192P2191P2188P2187Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P2626 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about P2626GET THE ANSWERFree account required — we'll bring your question with you.