Paccar
PACCAR PX-9 CM2350 (2013-17) Fault Code:2374 PID:131 SPN:1209 FMI:4 Exhaust Gas Pressure Sensor 1 Circuit – Voltage Below Normal or Shorted to Low Source
Posted by Diezel Solutions on
Reason:Exhaust Gas Pressure Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at the exhaust gas pressure circuit. Effect:Possible reduced engine performance. Circuit Description:The exhaust gas pressure sensor is used to measure exhaust gas pressure in the exhaust manifold. This information is used by the engine control module (ECM) to control emissions and exhaust gas recirculation (EGR) valve operation. The ECM provides a 5 volt supply to the exhaust gas pressure sensor on the sensor supply circuit. The ECM also provides a ground on the sensor return circuit. The exhaust gas pressure sensor provides...
PACCAR PX-9 CM2350 (2013-17) Fault Code:2375 PID:412 SPN:412 FMI:3 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source
Posted by Diezel Solutions on
Reason:Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Above Normal or Shorted to High Source. High signal voltage detected at EGR temperature circuit. Effect:Possible reduced engine performance Circuit Description:The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used...
PACCAR PX-9 CM2350 (2013-17) Fault Code:2376 PID:412 SPN:412 FMI:4 Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source
Posted by Diezel Solutions on
Reason:Exhaust Gas Recirculation Temperature Sensor Circuit – Voltage Below Normal or Shorted to Low Source. Low signal voltage detected at EGR temperature circuit Effect:Possible reduced engine performance. Circuit Description:The exhaust gas recirculation (EGR) temperature sensor is a variable resistor sensor and is used to measure the temperature of the EGR gas flow after it exits the EGR cooler. The engine control module (ECM) supplies 5 volts to the EGR temperature signal circuit. The ECM monitors the change in voltage caused by changes in the resistance of the sensor to determine the EGR flow temperature. The EGR temperature value is used...
PACCAR PX-9 CM2350 (2013-17) Fault Code:2377 PID:SID 33 SPN:647 FMI:3 Fan Control Circuit – Voltage Above Normal or Shorted to High Source
Posted by Diezel Solutions on
Reason:Fan Control Circuit – Voltage Above Normal or Shorted to High Source. Open circuit or high voltage detected at the fan control circuit. Effect:The fan can stay on continuously or not run at all. Circuit Description:The fan control circuit is a device used by the engine to control the fan operation. When the engine control module (ECM) energizes the fan control circuit, the engine fan is engaged. The fan control circuit utilizes a pulse width modulated (PWM) signal. A PWM signal is a pulsed voltage signal between 0-VDC and system voltage. The frequency of the pulsed voltage signal is dependent...
PACCAR PX-9 CM2350 (2013-17) Fault Code:238 PID:SID 232 SPN:3511 FMI:4 Sensor Supply 3 Circuit – Voltage Below Normal or Shorted to Low Source
Posted by Diezel Solutions on
Reason:Sensor Supply 3 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected on the +5 volt sensor supply circuit to the engine speed sensor. Effect:Engine may run rough, may stop running, may not start, or may be difficult to start. Circuit Description:The sensor supply 3 circuit provides a 5 volt supply to the primary engine speed/position sensor. Component Location:Sensor Supply 3 originates in the engine wiring harness. It provides 5 VDC to the engine crankshaft speed/position sensor. Conditions for Running the Diagnostics:This diagnostic runs continuously when the keyswitch is in the ON position or when the...