SENSOR 3T2469 - Caterpillar

Table 1
Diagnostic Trouble Codes for the Data Link Sensors
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
3216-11 3655-11 Aftertreatment #1 Intake NOx : Other Failure Mode The NOx sensor cannot reach the correct operating temperature in the defined time period
3216-12 3655-12 Aftertreatment #1 Intake NOx : Failure The data received from the NOx sensor is out of range.
The code is logged.
The warning lamp is illuminated.
3226-11 3609-11 Aftertreatment #1 Outlet NOx : Other Failure Mode The NOx sensor cannot reach the correct operating temperature in the defined time period
3226-12 3609-12 Aftertreatment #1 Outlet NOx : Failure The data received from the NOx sensor is out of range.
The code is logged.
The warning lamp is illuminated.
3360-12 3820-12 Catalyst Tank Controller : Failure The data received from the DCU is out of range.
The code is logged.
The warning lamp is illuminated.
3516-2
(2017- Engines Only) 3100-2 Aftertreatment #1 DEF Concentration: Erratic, Intermittent, or Incorrect The DEF quality sensor is unable to read the DEF concentration due to an optical path obstruction.
The code is logged.
The warning lamp is illuminated.
3516-12
(2017- Engines Only) 3100-12 Aftertreatment #1 DEF Concentration: Failure The DEF quality sensor has failed.
The code is logged.
The warning lamp is illuminated. If the electronic service tool will not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Does Not Communicate" before starting this procedure. The procedure verifies that electrical power is being supplied to the ECM and to the diagnostic connector.The data links are used to communicate information between the engine ECM and other control modules that are a part of the application. The electronic service tool also communicates with the ECM via the data links.The diagnostic connector contains connections for electrical power and for the data links.When the keyswitch is in the OFF position, the electronic service tool may communicate with the ECM. However, the communications may be disrupted and the communications may require frequent reconnection. To avoid any disruption, place the keyswitch in the ON position when the electronic service tool is being used.The electronic service tool may display the following error message:"The version of the ECM is not recognized and the integrity of the changed parameters and displayed data is not guaranteed."This message indicates that one of the following conditions exist:
The flash file in the ECM is newer than the version of the electronic service tool.
The latest version of the electronic service tool has not been installed.During the following procedure, refer to the electrical schematic for the application.Complete the procedure in the order in which the steps are listed.
Table 2
Troubleshooting Test Steps Values Results
1. Check the Connectors
A. Turn the keyswitch to the ON position.
B. Connect the electronic service tool to the diagnostic connector.
C. Record all active and logged codes.
D. Turn the keyswitch to the OFF position.
E. Allow the system to completely power down before disconnecting connectors.
F. Thoroughly inspect the connectors that are associated with the data link sensor 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