SENSOR-PRESSURE 3618400 - Caterpillar

Table 1
J1939 Code and Description CDL Code and Description Comments
3216-12
Aftertreatment #1 Intake NOx : Failure 3655-12
Aftertreatment #1 Intake NOx Level Sensor : Failure A failed aftertreatment intake NOx sensor has been detected.
3226-12
Aftertreatment #1 Outlet NOx : Failure 3609-12
Aftertreatment #1 Outlet #1 NOx Level Sensor : Failure A failed aftertreatment outlet NOx sensor has been detected.
3516–2
Aftertreatment #1 DEF Concentration: Erratic, Intermittent, or Incorrect 3100–2
Aftertreatment #1 DEF Tank Fluid Quality Sensor : Erratic, Intermittent, or Incorrect The DEF quality sensor is unable to read the DEF concentration due to an optical path obstruction.
3516–12
Aftertreatment #1 DEF Concentration: Failure 3100–12
Aftertreatment #1 DEF Tank Fluid Quality Sensor : Failure A failed DEF Quality Sensor has been detected
5742-12
Aftertreatment Diesel Particulate Filter Temperature Sensor Module : Failure 5405-12
Aftertreatment DPF Temperature Sensor Module : Failure A failed DPF temperature sensor has been detected.
5758-11
Aftertreatment #1 Intake Gas Sensor Power Supply : Other Failure Mode 3621-11
Engine Exhaust NOx Level Sensor Power Supply: Other Failure Mode The ECM detects voltage that is outside the acceptable value.
5759-11
Aftertreatment #1 Outlet Gas Sensor Power Supply : Other Failure Mode 3619-11
Aftertreatment #1 Outlet#1 NOx Level Sensor Power Supply: Other Failure Mode The ECM detects voltage that is outside the acceptable value. Note: Turn the keyswitch to the OFF position before connecting or disconnecting these components.If the Cat® Electronic Technician (ET) will not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" before you begin this procedure.
Table 2
Troubleshooting Test Steps Values Results
1. Check the Connectors
A. Turn the keyswitch to ON.
B. Connect to the "Engine ECM" using Cat ET.
C. Record all active and logged codes.
D. Turn the keyswitch to OFF.
E. Allow the system to completely power down before disconnecting connectors.
F. Thoroughly inspect the connectors that are associated with the data link circuits. Verify that the connectors are free of debris, free of corrosion, and securely connected.
Connectors
Result: The connectors were connected properly and did not have corrosion or moisture.
If a -11 code is active or logged, Proceed to Test Step 2.
If a 3216-12, 3655-12, 3226-12, or 3609-12 code is active or logged, replace the appropriate NOx sensor. Refer to Special Instruction, REHS8151 for special handling instructions. Proceed to Test Step 5.
Result: A 3516-12 or 3100-12 code is active or logged.
Repair: Turn the keyswitch to OFF, allow 2 minutes to elapse before proceeding. Replace the DEF tank header. Refer to Disassembly and Assembly, Manifold (DEF Heater) - Remove and Install.
Turn the keyswitch to ON, allow 2 minutes to elapse before proceeding. Verify that the diagnostic code is no longer active. Proceed to Test Step 5.
Result: A 3516-2 or 3100-2 code is active or logged.
Proceed to Test Step 3.
Result: A 5742-12 or 5405-12 code is active or logged.
Repair: Replace the DPF Temperature Sensor module. Refer to Disassembly and Assembly, Temperature Sensor (DPF Inlet, Flame Detect) - Remove and Install.
Turn the keyswitch to ON. Verify that the diagnostic code is no longer active. Proceed to Test Step 5.
Result: The connectors were not connected properly or the connectors did have corrosion or moisture.
Repair: Repair the connectors