5921 SPN Fault Code

Name:

HVES1 Fast Update State of Charge

Description:

Indicates the High Voltage Energy Storage 1 pack (or system) state of charge. 0% means no charge remaining, 100% means the system is fully charged in terms of physical limits of the energy storage system. Acceptable state of charge upper and lower boundaries for normal operation are defined in SPN 8118 (HVES1 Recommended Minimum State Of Charge) and SPN 8119 (HVES1 Recommended Maximum State Of Charge). The update rate and resolution of this parameter are intended for control purposes within a hybrid control system; for a simple periodic value, SPN 5464 (Hybrid Battery Pack Remaining Charge) may be of use.

5921 spn fault code name is HVES1 Fast Update State of Charge. If you don't take the time to look into 5921 spn fault when it arises, it can add up quickly. One small issue like 5921 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 5921 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.

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