Generator randomly shuts down after running for some time, with no error code stored.

Safety first: Turn OFF the generator and disconnect battery negative before inspecting wiring.

• Wiggle test: With the engine idling (if safe), gently move wiring harnesses and connectors to see if movement causes shutdown. Focus on sensor and control wiring.
• Inspect connectors: Unplug and inspect key sensor connectors for corrosion or loose pins. Clean and reseat.
• Secure harnesses: Use cable ties and clamps to prevent harnesses from rubbing on sharp edges or vibrating excessively.
• Replace suspect relays: If shutdowns correlate with relay clicks, replace the affected control relay.