Fault Codes/Discovery Energy, LLC (Rehlko)/P1520Discovery Energy, LLC (Rehlko)P1520ErrorFuelWhat This Code MeansThrottle Actuator Primary Span Data LostPossible Causes•Bad throttle body or leadsSuggested Actions1Troubleshoot the TP sensor leads. Refer to the Throttle Position (TP) Sensor Troubleshooting section.2Replace the throttle body. Refer to the Air - Fuel Mixer, Adapter, and Throttle Body Assembly section.Related Discovery Energy, LLC (Rehlko) Fault CodesP1521P1522P1134P1562P0224P1633P0223P2112P0222P2163P0221P2164Browse all Discovery Energy, LLC (Rehlko) fault codes→ASK RUDY ABOUT THIS FAULTGet a diagnosis walkthrough for P1520 on your specific Discovery Energy, LLC (Rehlko) unit — cited to the OEM manual, not a forum guess.Your question about P1520GET THE ANSWERFree account required — we'll bring your question with you.