Generator controller displays E18 and logs fuel-related alarms

Safety first: Turn OFF the generator, disable auto-start, and avoid open flames or sparks near the fuel tank.

• Check fuel level manually: Verify actual fuel level using the tank sight gauge or dipstick. Compare with the reading on the controller.
• Inspect sender wiring: Locate the fuel level sender on the tank top. Inspect the connector and wiring harness for corrosion, damage, or disconnection. Clean and reseat connectors.
• Measure sender resistance: Disconnect the sender and measure its resistance with a multimeter while moving the float (if accessible). Compare readings to Honda specifications. Replace the sender if readings are open, shorted, or erratic.
• Check controller settings: In the controller menu (if available), verify that the correct tank size and sender type are configured.
• Clear code: After correcting wiring or replacing the sender, clear E18 and monitor fuel level readings during operation.