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Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 689 PID: PID 190 SPN: 190 FMI: 2 Engine Crankshaft Speed/Position- Data Erratic, Intermittent, or Incorrect
Posted by PerDiezel Solutions on
Circuit DescriptionThe crankshaft position and camshaft position sensors are Hall effect type sensors. The engine control module (ECM) provides a 5 volt supply to the position sensor and a return circuit. As the teeth on the crankshaft speed ring or the dimples in the back of the camshaft gear move past the position sensor, a signal is generated on the position sensor signal circuit. The ECM interprets this signal and converts it to an engine speed. A missing tooth on the crankshaft gear is used by the ECM to determine the position of the engine. Component LocationThe crankshaft position and...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 691 PID: PID 351 SPN: 1172 FMI: 3 Turbocharger 1 Compressor Intake Temperature Circuit- Voltage Above Normal or Shorted to High Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe compressor intake air temperature sensor is a variable resistor sensor and is used to measure the temperature of the air entering the compressor intake of the turbocharger. The engine control module (ECM) supplies 5-VDC to the compressor intake temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the air temperature. Component LocationThe turbocharger compressor intake temperature sensor is located in the compressor inlet of the turbocharger. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position or when the engine...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 692 PID: PID 351 SPN: 1172 FMI: 4 Turbocharger 1 Compressor Intake Temperature Circuit- Voltage Below Normal or Shorted to Low Source
Posted by PerDiezel Solutions on
Circuit DescriptionThe turbocharger compressor intake temperature sensor is a variable resistor sensor and is used to measure the temperature of the air entering the compressor intake of the turbocharger. The engine control module (ECM) supplies 5-VDC to the compressor intake temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the air temperature. Component LocationThe turbocharger compressor intake temperature sensor is located in the compressor inlet of the turbocharger. Conditions for Running the DiagnosticsThis diagnostic runs continuously when the keyswitch is in the ON position or when the engine...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6925 PID: SPN: 3216 FMI: 11/31 Aftertreatment 1 SCR Intake NOx Sensor – Condition Exists
Posted by PerDiezel Solutions on
Lamp:Amber Reason:An incorrect NOx sensor reading has been detected by the aftertreatment intake NOx sensor. Effect:Possible reduced engine performance. Circuit Description:The aftertreatment intake NOx (Nitrogen Oxides) sensor is a smart device and communicates with the Engine Control Module (ECM) via the J1939 data link. The aftertreatment intake NOx sensor performs internal diagnostics and reports malfunctions back to the primary ECM using the J1939 data link. The NOx sensor is permanently attached to the NOx control module. They are serviced as a single component and can not be replaced individually. The aftertreatment intake NOx sensor is used to measure the NOx...
Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 6926 PID: SPN: 3216 FMI: 14/14 Aftertreatment 1 SCR Intake NOx Sensor – Special Instructions
Posted by PerDiezel Solutions on
Lamp:Amber Reason:An incorrect NOx sensor reading has been detected by the aftertreatment intake NOx sensor. Effect:Possible reduced engine performance. Circuit Description:The aftertreatment intake NOx (nitrogen oxides) sensor is a smart device and communicates with the Engine Control Module (ECM) via the J1939 data link. The aftertreatment intake NOx sensor performs internal diagnostics and reports malfunctions back to the primary ECM using the J1939 data link. The NOx sensor is permanently attached to the NOx control module. They are serviced as a single component and can not be replaced individually. The aftertreatment intake NOx sensor is used to measure the NOx...
