7978 SPN Fault Code

Name:

Power Electronics Coolant Pump Operating Status

Description:

Indicates the operating status of the Power Electronics Coolant Pump system or component. This parameter is used to inform other devices that this system or component is no longer performing to its operational capacity and that reduced, or no flow, of the coolant can be expected. Derated or Not Operable condition may require other vehicle systems to modify their operation. The Power Electronics Coolant Pump Controller Status Reason Code (SPN 7972) may provide additional detail as to the nature of the system status. 00b = Normal Operation 01b = Derated Operation 10b = Not Operable 11b = Not Available

7978 spn fault code name is Power Electronics Coolant Pump Operating Status. If you don't take the time to look into 7978 spn fault when it arises, it can add up quickly. One small issue like 7978 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 7978 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.

7978 SPN Fault Code

Name:

Description:

Similar SPN Codes :

Truck List With 7978 SPN Code :