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B6.7 CM2450 B155B Fault Code: 2771 | SPN: 3226 | FMI: 9Aftertreatment 1 Outlet NOx Sensor – Abnormal Update Rate
Overview CODE REASON EFFECT Fault Code: 2771PID: SPN: 3226FMI: 9/9LAMP: AmberSRT: No communication or an invalid data transfer rate detected on the J1939 data link between the ECM and the aftertreatment outlet NOx sensor. Possible reduced...
B6.7 CM2450 B155B Fault Code: 2692 | SPN: 3936 | FMI: 2Aftertreatment 1 Diesel Particulate Filter System – Data Erratic, Intermittent, or Incorrect
Overview CODE REASON EFFECT Fault Code: 2692PID: SPN: 3936FMI: 2/2LAMP: AmberSRT: The aftertreatment particulate matter sensor has detected a problem with the diesel particulate filter system. Possible reduced engine performance. Circuit...
B6.7 CM2450 B155B Fault Code: 2639 | SPN: 3251 | FMI: 15Aftertreatment 1 Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Least Severe Level
Overview CODE REASON EFFECT Fault Code: 2639PID: S324SPN: 3251FMI: 0/15LAMP: NoneSRT: The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits. Possible reduced engine performance. Circuit...
B6.7 CM2450 B155B Fault Code: 2638 | SPN: 5298 | FMI: 17Aftertreatment 1 Diesel Oxidation Catalyst Conversion Efficiency – Data Valid But Below Normal Operating Range – Least Severe Level
Overview CODE REASON EFFECT Fault Code: 2638PID: S380SPN: 5298FMI: 1/17LAMP: NoneSRT: The temperature increase across the aftertreatment diesel oxidation catalyst is lower than expected. May cause frequent aftertreatment regeneration....
B6.7 CM2450 B155B Fault Code: 1993 | SPN: 4795 | FMI: 31Aftertreatment 1 Diesel Particulate Filter Missing – Condition Exists
Overview CODE REASON EFFECT Fault Code: 1993PID: SPN: 4795FMI: 11/31LAMP: AmberSRT: The aftertreatment diesel particulate filter in the exhaust system is not present. Possible reduced engine performance. Circuit Description The engine...
B6.7 CM2450 B155B Fault Code: 1981 | SPN: 3936 | FMI: 15Aftertreatment 1 Diesel Particulate Filter System – Data Valid But Above Normal Operating Range – Least Severe Level
Overview CODE REASON EFFECT Fault Code: 1981PID: SPN: 3936FMI: 0/15LAMP: AmberSRT: The aftertreatment differential pressure has exceeded the maximum operating limits or the diesel particulate filter is plugged. Possible reduced engine...
B6.7 CM2450 B155B Fault Code: 1922 | SPN: 3251 | FMI: 0Aftertreatment 1 Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Most Severe Level
Overview CODE REASON EFFECT Fault Code: 1922PID: S324SPN: 3251FMI: 0/0LAMP: RedSRT: The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits. Engine protection derate is enabled. Possible reduced...
B6.7 CM2450 B155B Fault Code: 1921 | SPN: 3251 | FMI: 16Aftertreatment 1 Diesel Particulate Filter Differential Pressure – Data Valid But Above Normal Operating Range – Moderately Severe Level
Overview CODE REASON EFFECT Fault Code: 1921PID: S324SPN: 3251FMI: 0/16LAMP: AmberSRT: The soot load of the aftertreatment diesel particulate filter has exceeded the recommended limits. Possible reduced engine performance. Circuit...
B6.7 CM2450 B155B Fault Code: 1887 | SPN: 3226 | FMI: 4Aftertreatment 1 Outlet NOx Sensor Circuit – Voltage Below Normal or Shorted to Low Source
Overview CODE REASON EFFECT Fault Code: 1887PID: SPN: 3226FMI: 4/4LAMP: AmberSRT: An internal circuit error has been detected by the aftertreatment outlet NOx sensor. Possible reduced engine performance. Circuit Description The...
B6.7 CM2450 B155B Fault Code: 1885 | SPN: 3216 | FMI: 4Aftertreatment 1 Intake NOx Sensor Circuit – Voltage Below Normal or Shorted to Low Source
Overview CODE REASON EFFECT Fault Code: 1885PID: SPN: 3216FMI: 4/4LAMP: AmberSRT: An internal circuit error has been detected by the aftertreatment intake NOx sensor. Possible reduced engine performance. Circuit Description The...
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