98
Thermo King
Warning

Check Fuel Level Sensor

The controller detects an invalid or inconsistent reading from the fuel level sensor.

Possible causes

  • Physically damaged fuel level sensor
  • Grounding failure in sensor circuit
  • Wiring issues between sensor and controller
  • Stuck sensor float

Recommended actions

  • Visually inspect fuel tank wiring
  • Clean and tighten sensor connectors
  • Test wiring continuity
  • Replace sensor assembly if fault persists

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