Flex Fuel Sensor Diagram


This article provides wiring diagrams for flex fuel sensors that read both ethanol content percentage and fuel temperature in a single unit. These diagrams help simplify installation by showing the correct connections to achieve accurate dual readings from a single sensor, making it easier to monitor both parameters in your setup.

Flex Fuel Sensor Wiring Diagram

Products

Wiring

  • Red – 12V Switched Power
  • Black – Sensor Ground
  • Yellow – Flex Fuel Signal (Connect to ECU Flex Input)