4815 SPN Fault Code

Name:

Engine Cooling Fan Thermal Switch

Description:

This is a feedback measurement of the position of a thermal switch that turns on an engine cooling fan. 0 = OFF (cooling flow not needed) 1 = ON (cooling flow demanded) 2 = ERROR 3 = Not Available Note that this is not a command to turn the fan on, nor a direct measurement of fan speed to assure that the fan is working. It is a measurement of the position of a switch that is activated by temperature, and provides feedback to the ECU of the state of that thermal switch.

4815 spn fault code name is Engine Cooling Fan Thermal Switch. If you don't take the time to look into 4815 spn fault when it arises, it can add up quickly. One small issue like 4815 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small components to save money down the road.

Note: The name and description of 4815 code represents text descriptions for faults supported by another coding system and does not necessarily comply with SAE J1939. For a specific engine manufacturer's explanation for codes, please consult the engine's technical manual. See also other spn codes.

4815 SPN Fault Code

Name:

Description:

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