Ryobi controller displays E14 and the generator will not start.

Safety first: Turn the generator OFF and disconnect the battery negative cable.

• Locate the intake air temperature sensor: It is typically mounted in the air intake duct or air filter housing. Refer to the Ryobi service manual for exact location.
• Inspect connector and wiring: Ensure the sensor plug is fully seated and free of corrosion. Check the harness for chafing or rodent damage.
• Test sensor resistance: Using a multimeter, measure resistance across the sensor terminals and compare to the temperature/resistance chart in the manual. Replace the sensor if readings are out of range.
• Clear code and test: Reconnect the battery, clear E14, and start the generator. If the code returns with a new sensor and good wiring, the controller may have an internal fault and should be evaluated by a technician.