Fault Codes/Discovery Energy, LLC (Rehlko)/P2109Discovery Energy, LLC (Rehlko)P2109ErrorGeneralWhat This Code MeansP2109Possible Causes•Problem with throttle body or leads.Suggested Actions1Check for smooth throttle operation.2Troubleshoot the TP sensor leads. Refer to the Throttle Position (TP) Sensor Troubleshooting section.3Perform manual throttle zero process using the scan tool.4Replace the throttle body if the code continues to occur. Refer to the Air - Fuel Mixer, Adapter, and Throttle Body Assembly section.Related Discovery Energy, LLC (Rehlko) Fault CodesP2111P2113P2103P2119P2102P2135P2100P2177P1609P2178P1519 3464 13P2187Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P2109 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about P2109GET THE ANSWERFree account required — we'll bring your question with you.