8123 SPN Fault Code

Name:

HVES1 High-Voltage Bus Connect Command

Description:

Command to connect the High Voltage Energy Storage 1 pack (or system) to the high-voltage bus. The emergency contactor closure request may be used in situations where one or more faults in the hybrid powertrain prevent normal operation, but the vehicle operator desires operation due to a perceived emergency situation. Receivers of this command should always support state 10b (Emergency contactor closure request), even if the criteria for closing the contactor are the same as used in response to state 01b.00b = Open Contactor; Disconnect HVES from high-voltage bus 01b = Close Contactor; Connect HVES to high-voltage bus 10b = Emergency contactor closure request 11b = Don’t care/Take no action

8123 spn fault code name is HVES1 High-Voltage Bus Connect Command. If you don't take the time to look into 8123 spn fault when it arises, it can add up quickly. One small issue like 8123 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 8123 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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