GEAR-RING 1197062 - Caterpillar

Table 1
Diagnostic Trouble Code for DOC Has Incorrect Inlet Temperature
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
4765-17 E2165 (1) Aftertreatment #1 Diesel Oxidation Catalyst Intake Gas Temperature : Low - least severe (1) ECM detects that the DOC inlet temperature is below the acceptable range during HC dosing.
The code is logged.
Follow the troubleshooting procedure in order to identify the root cause of the fault.
Table 2
Associated Codes
J1939 Codes CDL Codes
649-5 3512-5
649-6 3512-6
649-7 E1263 (2)
5625-3 3513-3
5625-4 3513-4 Complete the procedure in the order in which the steps are listed.
Table 3
Troubleshooting Test Steps Values Results
1. Check for Diagnostic Trouble Codes
A. Turn the keyswitch to the ON position. Do not start the engine.
B. Connect to the electronic service tool.
C. Check for associated diagnostic trouble codes.
Diagnostic trouble codes
Result: A 4765-17 code is active or recently logged.
Proceed to Test Step 2.
Result: An associated code is active or recently logged.
Troubleshoot the logged or active code. Refer to Troubleshooting, "Diagnostic Trouble Codes".
Result: No codes are active or recently logged.
Proceed to Test Step 3.
2. Check the Exhaust System
A. Check the exhaust system for gas leaks between the Exhaust Back Pressure Regulator (EBPR) and the Clean Emissions Module (CEM).
B. Check for missing or damaged exhaust system insulation.
C. Make sure that the exhaust piping between the EBPR and the CEM is no longer than 1.83 m (6 ft).
Exhaust system
Result: The exhaust system has a gas leak.
Repair: Make the necessary repairs.
Proceed to Test Step 3.
Result: The exhaust system insulation is damaged or missing.
Repair: Make the necessary repairs.
Proceed to Test Step 3.
Result: The exhaust system is not within the specification.
Repair: Contact the Dealer Solutions Network (DSN).
Proceed to Test Step 3.
3. Check the Exhaust System Temperature
A. Connect to the electronic service tool.
B. Run the engine.
C. Perform the "HC Dosing Capability Test".
Test
Result: The "HC Dosing Capability Test" completed successfully.
Return the unit to service.
Result: The "HC Dosing Capability Test" failed. Associated diagnostic trouble codes are active.
Troubleshoot the logged or active code. Refer to Troubleshooting, "Diagnostic Trouble Codes".
Result: The "HC Dosing Capability Test" failed. An error code is generated by the electronic service tool.
Troubleshoot the error code. Refer to Troubleshooting, "Service Tool Error Identifiers".
Result: The "HC Dosing Capability Test" failed. No associated diagnostic trouble codes are active.
Contact the Dealer Solutions Network (DSN).