(Table 49, contd)
4. Check the DEF Level Measurement
A. Operate the machine to agitate the DEF in the tank
Gauge position Result: The gauge did not move.
Repair : Repair the DEF Tank header sensor with the DEF
Manifold Sensor Kit. Refer to Disassembly and Assembly,
Manifold (DEF Heater) Sensor - Disassemble (Tempera-
ture, Level, Quality DEF Manifold Sensor) and Manifold
(DEF Heater) Sensor -Assemble (Temperature, Level,
Quality DEF Manifold Sensor).
Result: The gauge moved.
Proceed to Test Step 5.
5. Inspect the DEF Tank Header
A. Turn the keyswitch to the OFF position.
B. Remove tank header (2) from the DEF tank. Refer to Disas-
sembly and Assembly, “Manifold (DEF Heater) - Remove and
Install”.
C. Inspect the DEF tank header for damage and check for a stuck
float.
Proper opera-
tion of the float
Result: The float was not operating correctly.
Repair: Repair the float if possible. If the float cannot be re-
paired, replace the DEF tank header. Refer to the Disas-
sembly and Assembly manual for the correct procedure.
Return the unit to service.
Result: The float was operating correctly.
Repair : Repair the DEF Tank header sensor with the DEF
Manifold Sensor Kit. Refer to Disassembly and Assembly,
Manifold (DEF Heater) Sensor - Disassemble (Tempera-
ture, Level, Quality DEF Manifold Sensor) and Manifold
(DEF Heater) Sensor -Assemble (Temperature, Level,
Quality DEF Manifold Sensor).
Return the unit to service.
If the procedure did not correct the issue, contact the
Dealer Solutions Network (DSN).
i08593185
DEF Tank Temperature Is High
Table 50
Diagnostic Trouble Code for DEF Tank Temperature Is High
J1939 Code PDL Code
Description
(code descriptions may vary)
Notes
3031-16
E960 (2)
Catalyst Tank Temperature : High - moderate
severity (2)
The temperature of the Diesel Exhaust Fluid (DEF) in
the DEF tank has exceeded the parameter pro-
grammed in the ECM.
The code is logged.
The engine is derated.
Follow the troubleshooting procedure to identify the root cause of the problem.
Complete the procedure in the order in which the
steps are listed.
UENR4469-36 115
Symptom Troubleshooting
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