3188 SPN Fault Code

Name:

XBR Message Checksum

Description:

The XBR message checksum is used to verify the signal path from the demanding device to the brake controller on electronic brake systems. The support of this parameter is mandatory if PGN 1024 is supported as there is no means to indicate « not available ».The 4 bit XBR message checksum is calculated using the first 7 data bytes, the 4 bit message counter and the bytes of the message identifier. It is calculated as follows: Checksum = (Byte1 + Byte2 + Byte3 + Byte4 + Byte5 + Byte6 + Byte7 + (message counter & 0Fh) + message ID low byte + message ID mid low byte + message ID mid high byte + message ID high byte) XBR Message Checksum = ((Checksum >> 4) + Checksum) & 0Fh Note: A failure in the communication sets the XBR system state: – to ’01b’ for failed XBR ‘priority 01b, 10b or 11b’ messages – to ’10b’ for failed XBR ‘priority 00b’ messages.

3188 spn fault code name is XBR Message Checksum. If you don't take the time to look into 3188 spn fault when it arises, it can add up quickly. One small issue like 3188 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 3188 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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