B6.7 CM2450 B155B Fault Code: 5866 | SPN: 520953 | FMI: 3Aftertreatment Diesel Exhaust Fluid Dosing Unit Relay Feedback – Voltage Above Normal or Shorted to High Source

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 5866PID: SPN: 520953FMI: 3/3LAMP: AmberSRT:    A short to battery has been detected on the Diesel Exhaust Fluid Dosing Unit Relay Feedback signal.     Possible reduced engine performance. Circuit...

B6.7 CM2450 B155B Fault Code: 5865 | SPN: 4375 | FMI: 4Aftertreatment 1 Diesel Exhaust Fluid Pump Command Circuit – Voltage Below Normal or Shorted to Low Source

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 5865PID: SPN: 4375FMI: 4/4LAMP: AmberSRT:    A short circuit to ground has been detected in the diesel exhaust fluid pump command circuit.     Engine torque output will be reduced. Circuit Description The...

B6.7 CM2450 B155B Fault Code: 5864 | SPN: 4375 | FMI: 3Aftertreatment 1 Diesel Exhaust Fluid Pump Command Circuit – Voltage Above Normal or Shorted to High Source

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 5864PID: SPN: 4375FMI: 3/3LAMP: AmberSRT:    A short circuit to battery has been detected in the diesel exhaust fluid pump command circuit.     Possible reduced engine performance. Circuit Description The...

B6.7 CM2450 B155B Fault Code: 5838 | SPN: 5717 | FMI: 10Aftertreatment 1 Outlet NOx Sensor Self-Diagnosis – Abnormal Rate of Change

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 5838PID: SPN: 5717FMI: 10/10LAMP: AmberSRT:    The aftertreatment outlet NOx sensor reading is not valid.     None on performance. Circuit Description The aftertreatment outlet NOx (nitrogen oxides) sensor...

B6.7 CM2450 B155B Fault Code: 5837 | SPN: 5835 | FMI: 21Aftertreatment 1 Particulate Sensor – Data Not Rational – Drifted Low

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 5837PID:SPN: 5835FMI: 2/21LAMP: AmberSRT:   An in-range low failure has been detected.     Possible reduced engine performance. Circuit Description The aftertreatment particulate matter sensor is a smart...

B6.7 CM2450 B155B Fault Code: 5792 | SPN: 7321 | FMI: 4Aftertreatment 1 Particulate Sensor Heater High Side Driver Circuit – Voltage Below Normal or Shorted to Low Source

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 5792PID: SPN: 7321FMI: 4/4LAMP: AmberSRT:    An internal circuit error has been detected by the aftertreatment particulate matter sensor.     Possible reduced engine performance. Circuit Description The...