572 SPN Fault Code

Name:

Retarder Enable – Shift Assist Switch

Description:

Switch signal which indicates whether the operator wishes the retarder to be enabled for transmission shift assist. The retarder does not check this switch, nor does the enabling of this switch engage the retarder. When this switch is « enabled, » the transmission may activate the retarder (via the TSC1 message) to increase the rate of engine deceleration to assist in shift control. The switch exists to prevent the engine retarder from being asked to be engaged via TSC1 in a noise sensitive area. See SPN 571.00b = Retarder – shift assist disabled 01b = Retarder – shift assist enabled 10b = Error 11b = Not available

572 spn fault code name is Retarder Enable – Shift Assist Switch. If you don't take the time to look into 572 spn fault when it arises, it can add up quickly. One small issue like 572 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 572 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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