4207 SPN Fault Code

Name:

Message Checksum

Description:

The message checksum is used to verify the signal path from the transmitting device to the receiving device. The message checksum is calculated using the first 7 data bytes, the 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) Message Checksum = (((Checksum >> 6) & 03h) + (Checksum >>3) + Checksum) & 07h Value Fh (all bits set to 1) will indicate that the checksum is not available. For compatibility purposes, TSC1 should also be honored if the checksum is not available from the transmitting device.

4207 spn fault code name is Message Checksum. If you don't take the time to look into 4207 spn fault when it arises, it can add up quickly. One small issue like 4207 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 4207 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.

4207 SPN Fault Code

Name:

Description:

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