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Cummins ISB4.5 CM2150 Fault Code: 1668 PID: 203C SPN: 1761 FMI: 4 Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage Below Normal, or Shorted to Low Source.

Cummins ISB4.5 CM2150 Fault Code: 1669 PID: 203D SPN: 1761 FMI: 3 Aftertreatment Diesel Exhaust Fluid Tank Level Sensor Circuit - Voltage above normal or shorted to high source.

Cummins ISB4.5 CM2150 Fault Code: 1671 PID: 203F SPN: 1761 FMI: 18 Aftertreatment Diesel Exhaust Fluid Tank Level - Data Valid but Below Normal Operating Range - Moderately Severe Level.

Cummins ISB4.5 CM2150 Fault Code: 1673 PID: 203F SPN: 1761 FMI: 1 Aftertreatment Diesel Exhaust Fluid Tank Level - Data Valid but Below Normal Operating Range - Most Severe Level.

Cummins ISB4.5 CM2150 Fault Code: 1677 PID: 205C SPN: 3031 FMI: 4 Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Voltage Below Normal or Shorted to Low Source.

Cummins ISB4.5 CM2150 Fault Code: 1678 PID: 205D SPN: 3031 FMI: 3 Aftertreatment Diesel Exhaust Fluid Tank Temperature Sensor - Voltage Above Normal or Shorted to High Source.

Cummins ISB4.5 CM2150 Fault Code: 1679 PID: SPN: 3031 FMI: 2 Aftertreatment Diesel Exhaust Fluid Tank Temperature - Data Erratic, Intermittent, or Incorrect.

Cummins ISB4.5 CM2150 Fault Code: 1681 PID: SPN: 3361 FMI: 12 Aftertreatment Diesel Exhaust Fluid Dosing Unit - Bad Intelligent Device or Component.

Cummins ISB4.5 CM2150 Fault Code: 1682 PID: SPN: 3362 FMI: 31 Aftertreatment Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists

Cummins ISB4.5 CM2150 Fault Code: 1682 PID: SPN: 3362 FMI: 31 Aftertreatment Diesel Exhaust Fluid Dosing Unit Input Lines - Condition Exists.