9540 SPN Fault Code

Name:

DC/AC Accessory Inverter 3 AC Side Motor Starting RMS Voltage Request

Description:

Signal to the DC/AC Accessory Inverter indicating the requested AC side RMS voltage for starting the attached accessory motor. In a V/Hz variable speed motor control application, this voltage typically may be set to a non-zero value when an accessory motor is first started to allow it to move (i.e. overcome resistive drop at startup).

9540 spn fault code name is DC/AC Accessory Inverter 3 AC Side Motor Starting RMS Voltage Request. If you don't take the time to look into 9540 spn fault when it arises, it can add up quickly. One small issue like 9540 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 9540 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.

9540 SPN Fault Code

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