1677 SPN Fault Code

Name:

Auxiliary Heater Mode

Description:

State of the auxiliary heater 0000b = Heater not active 0001b = Off due to ADR per European Regulations for Transport of hazardous materials 0010b = Economy mode 0011b = Normal mode 0100b = Heater pump up-keep (running the equipment in order to keep it in good condition) 0101b = Heater Starting � Indicates the start-phase of the heater which can be used to control the fan and circulation air flaps. 0110b = Heater Stopping � Indicates the burn-out phase of the heater which can be used to control the fan and circulation air flaps. 0111b = Diagnose Active � Indicates any active/running diagnostic service/routine/IO-control without the normal heater burn taking place. 1000b = Heater Locked � Indicates a sticky error state after running a number of failed heater start attempts. Heater will need to be unlocked at a workshop. 1001b to 1101b = Not defined 1110b = Error 1111b = Not available

1677 spn fault code name is Auxiliary Heater Mode. If you don't take the time to look into 1677 spn fault when it arises, it can add up quickly. One small issue like 1677 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 1677 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.

1677 SPN Fault Code

Name:

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