Low Heater Fuel Level (CR)

Low fuel level detected specifically within the auxiliary heating system.

Possible causes

Low secondary fuel tank level
Defective heater level sensor
Obstructed heater supply line
Failing heater fuel pump

Recommended actions

Refill fuel tank if applicable
Verify fuel flow to the heater
Test heater fuel level sensor
Visually monitor cargo temperature

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Other Thermo King codes

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