Cummins ISB4.5 CM2150 Fault Code: 649 PID: SID 115 SPN: 1378 FMI: 11 Engine Oil Change Interval – Condition Exists.

Posted by PerDiezel Solutions on January 20, 2026

Circuit Description
The engine control module (ECM) informs the driver of a maintenance event by using the Maintenance Monitor feature’s lubrication oil drain limits.

Component Location
For a detailed component location view, refer to the appropriate service manual. Refer to the original equipment manufacturer (OEM) troubleshooting and repair manual for the location of the oil fill port.

Conditions for Running the Diagnostics
This diagnostic runs continuously when the keyswitch is in the ON position.

Conditions for Setting the Fault Codes
Based on the programmable setting in the Maintenance Monitor feature, the ECM detects the engine oil and filter need to be changed.

Action Taken When the Fault Code is Active
-The ECM illuminates the amber CHECK ENGINE light immediately when the maintenance condition is exceeded.

Conditions for Clearing the Fault Code
-The ECM will turn off the amber CHECK ENGINE light and the fault code will go inactive immediately after the Maintenance Monitor feature has been reset in INSITE™ electronic service tool.

Shop Talk
This fault code will only become active if the Maintenance Monitor is enabled in INSITE™ electronic service tool. Make sure the oil and filter are changed before clearing the fault code.

Cummins ISB4.5 CM2150 Fault Code: 598 PID: 167 SPN: 167 FMI: 1 Electrical Charging System Voltage – Data Valid But Below Normal Operating Range – Most Severe Level.

Cummins ISB4.5 CM2150 Fault Code: 597 PID: 167 SPN: 167 FMI: 1 Electrical Charging System Voltage – Data Valid But Below Normal Operating Range – Moderately Severe Level.

Cummins ISB4.5 CM2150 Fault Code: 596 PID: 167 SPN: 167 FMI: 0 Electrical Charging System Voltage – Data Valid But Above Normal Operating Range – Moderately Severe Level.

Cummins ISB4.5 CM2150 Fault Code: 585 PID: SID 39 SPN: 677 FMI: 4 Starter Relay Driver Circuit – Voltage Below Normal or Shorted to Low Source.

Cummins ISB4.5 CM2150 Fault Code: 584 PID: SID 39 SPN: 677 FMI: 3 Starter Relay Driver Circuit – Voltage Above Normal or Shorted to High Source.

Cummins ISB4.5 CM2150 Fault Code: 559 PID: 157 SPN: 157 FMI: 18 Injector Metering Rail 1 Pressure – Data Valid but Below Normal Operating Range – Moderately Severe Level.

WARNING!