B6.7 CM2450 B155B Fault Code: 6646 | SPN: 5569 | FMI: 2Aftertreatment 1 Diesel Particulate Filter 1 Soot Sensor ECU Internal Temperature – Data Erratic, Intermittent, or Incorrect

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 6646PID: SPN: 5569FMI: 2/2LAMP: AmberSRT:    Erratic internal temperatures have been detected by the aftertreatment particulate sensor.     Possible reduced engine performance. Circuit Description The...

B6.7 CM2450 B155B Fault Code: 6647 | SPN: 6780 | FMI: 3Aftertreatment 1 Diesel Particulate Filter Soot Temperature Sensor – Voltage Above Normal or Shorted to High Source

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 6647PID: SPN: 6780FMI: 3/3LAMP: AmberSRT:    An internal circuit error has been detected by the aftertreatment particulate matter sensor.     Possible reduced engine performance. Circuit Description The...

B6.7 CM2450 B155B Fault Code: 6485 | SPN: 4375 | FMI: 2Aftertreatment 1 Diesel Exhaust Fluid Pump Drive Percentage – Data Erratic, Intermittent, or Incorrect

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 6485PID: SPN: 4375FMI: 2/2LAMP: AmberSRT:    The diesel exhaust fluid pressure sensor has reported a reading too high or low for the operating conditions.     Possible reduced engine performance. Circuit...

B6.7 CM2450 B155B Fault Code: 6463 | SPN: 3226 | FMI: 21Aftertreatment 1 Outlet NOx Sensor – Data Not Rational – Drifted Low

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 6463PID: SPN: 3226FMI: 2/21LAMP: NoneSRT:    An offset in the outlet NOx sensor reading has been detected.     None on performance Circuit Description The aftertreatment outlet NOx (nitrogen oxides) sensor...

B6.7 CM2450 B155B Fault Code: 6461 | SPN: 3216 | FMI: 2Aftertreatment 1 Intake NOx – Data Erratic, Intermittent, or Incorrect

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 6461PID: SPN: 3216FMI: 2/2LAMP: NoneSRT:    An incorrect NOx sensor reading has been detected by the aftertreatment intake NOx sensor.     None on performance. Circuit Description The aftertreatment intake...

B6.7 CM2450 B155B Fault Code: 6459 | SPN: 3216 | FMI: 21Aftertreatment 1 Intake NOx Sensor – Data Not Rational – Drifted Low

by DPFDELETE-TUNER | Mar 4, 2025 | Uncategorized

Overview   CODE REASON EFFECT Fault Code: 6459PID: SPN: 3216FMI: 2/21LAMP: NoneSRT:    An offset in the intake NOx sensor reading has been detected.     None on performance. Circuit Description The aftertreatment intake NOx (nitrogen oxides) sensor...