E18
Pulsar
Engine Sensor Circuit Fault
Generator display shows E18 (Sensor Fault) and may indicate which sensor (oil, temp, speed) in a sub-message.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Open or shorted sensor wiring, Failed oil pressure sensor, Failed temperature sensor, Loose sensor connector
How to Fix / Troubleshooting
Safety first: Turn OFF the generator, disconnect the battery, and allow the engine to cool.
- Identify the sensor: Refer to the Pulsar display or manual to determine which sensor is implicated (e.g., oil, temp, RPM).
- Inspect wiring harness: Trace the harness from the control board to the sensor. Look for chafed insulation, pinched wires, or rodent damage.
- Reseat connectors: Unplug and replug the sensor connector to clean the contacts. Ensure it clicks into place.
- Check sensor body: Make sure the sensor is firmly threaded into the engine block or mounting point and not leaking.
If E18 persists, the sensor itself is likely defective and should be replaced with the correct Pulsar part number.
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Repair Difficulty
Medium
3/5
Required Part
Pulsar Oil Pressure Sensor
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