C4.4 and C6.6 Engines Caterpillar

The Electronic Control Module (ECM) monitors the temperature at the intake of the Diesel Particulate Filter (DPF). The ECM activates the following code when the conditions are met.

Complete the procedure in the order in which the steps are listed.

Table 1

Diagnostic Trouble Codes for Diesel Particulate Filter Temperature Is Low
J1939 Code	CDL Code	Code Description (code descriptions may vary)	Comments
3242-17	E1014 (1)	Particulate Trap Intake Gas Temperature : Low - least severe (1)	The temperature at the intake of the DPF is below the trip point that is calculated by the ECM. The trip point varies depending on engine operating conditions. The code is logged. The code remains active until electrical power to the ECM is cycled.
3242-18	E1014 (2)	Particulate Trap Intake Gas Temperature : Low - moderate severity (2)	The temperature sensor is not correctly installed. Engine power is derated 30%. The code is logged. The code remains active until electrical power to the ECM is cycled.

Table 2

Troubleshooting Test Steps	Values	Results
1. Check for Active Diagnostic Trouble Codes A. Turn the keyswitch to the ON position. B. Connect the electronic service tool. Check for active diagnostic trouble codes.	Diagnostic trouble codes	Result: A 3242-17 (E1014(1)) code is active. Proceed to Test Step 2. Result: A 3242-18 (E1014(2)) code is active. Proceed to Test Step 4. Result: A code other than the codes listed in Table 1 is active. Repair: Diagnose and rectify the fault before continuing with this procedure. Refer to Troubleshooting, "Diagnostic Trouble Codes".
2. Visually Inspect the Insulation on the Exhaust Duct (if equipped) A. Check the insulation on the exhaust duct between the engine and the Clean Emissions Module (CEM). Make sure that insulation is not missing or damaged.	Insulation	Result: The insulation is missing or damaged. Repair: Replace the insulation. Proceed to Test Step 5. Result: The insulation is not missing or damaged. Proceed to Test Step 3.
3. Check for Exhaust Back Pressure Regulator Faults A. Use the electronic service tool to check for any active diagnostic trouble codes that are associated with the Exhaust Back Pressure Regulator (EBPR).	EBPR	Result: There are active diagnostic trouble codes that are associated with the EBPR. Repair: Investigate and rectify any faults. Refer to Troubleshooting, "Motorized Valve - Test". Proceed to Test Step 5. Result: There are no active diagnostic trouble codes that are associated with the EBPR. Contact the Dealer Solutions Network (DSN).
4. Check the Sensor Installation A. Check that the temperature sensor is correctly installed and is not loose.	Sensor installation	Result: The temperature sensor is not correctly installed or is loose. Repair: Install the temperature sensor and tighten to the recommended torque. Refer to Disassembly and Assembly, "Temperature Sensor (DPF) - Remove and Install". Proceed to Test Step 5. Result: The temperature sensor is correctly installed and is not loose. Proceed to Test Step 5.
5. Check for Engine Faults A. Start the engine. B. Use the electronic service tool to check that the fault has been eliminated.	Diagnostic	Result: The fault has been eliminated. Return the unit to service. Result: The fault is still present. Contact the Dealer Solutions Network (DSN).