Generator runs but controller displays E16 and may limit output

Safety first: Turn OFF the generator, disconnect battery negative, and allow the exhaust system to cool completely before touching.

• Inspect exhaust outlet: Check the muffler outlet and exhaust piping for nests, debris, or crushed sections. Clear any obstructions and ensure the exhaust terminates per Honda installation guidelines.
• Check for soot buildup: Heavy black soot at the exhaust outlet may indicate rich running. Inspect air filter and replace if dirty. Verify correct fuel pressure and type.
• Inspect exhaust temperature sensor: Locate the sensor on the exhaust manifold or pipe. Check wiring and connector. Replace the sensor if wiring is intact but readings are clearly erroneous (requires diagnostic tool).
• Reduce load: If E16 occurs only at full load, consider reducing continuous load to 80–90% of rated capacity to lower exhaust temperatures.
• Professional tuning: Persistent high exhaust temperature may require adjustment of fuel system or timing by a qualified technician.