BOLT 1306677 - Caterpillar

Table 1
Diagnostic Trouble Code for DOC Has Low Conversion Efficiency
J1939 Code CDL Code Code Description
(code descriptions may vary) Comments
5298-17 E2180 (1) Aftertreatment 1 Diesel Oxidation Catalyst Conversion Efficiency : Low - least severe (1) ECM detects that the DOC outlet temperature is below the acceptable range during HC dosing.
The code is logged.
Follow the troubleshooting procedure to identify the root cause of the fault. Complete the procedure in the order in which the steps are listed.
Table 2
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 diagnostic trouble codes.
Diagnostic trouble codes
Result: A 5298-17 or E2180 code is active or recently logged.
Proceed to Test Step 2.
Result: A recurrence of 5298-17 or E2180 code is active or recently logged. The code has previously been rectified.
Proceed to Test Step 3.
Result: An associated code other than 5298-17 or E2180 is active or recently logged.
Repair: Troubleshoot the logged or active code. Refer to Troubleshooting, "Diagnostic Trouble Codes".
2. Check the Exhaust System
A. Check the exhaust system for evidence of oil between the Exhaust Back Pressure Regulator (EBPR) and the Clean Emissions Module (CEM).
Exhaust System
Result: Oil is present in the exhaust system.
Repair: Refer to Troubleshooting, "Exhaust System Contains Oil".
Result: There is no oil in the exhaust system.
Repair: Use the electronic service tool to perform the "HC Dosing Capability Test". Proceed to Test Step 3.
3. Check for High Sulfur Fuel
A. Ensure that the correct specification of fuel is being used. Refer to the Operation and Maintenance Manual for the correct specification.
Note: If fuel with a high sulfur content is used, this fault will reoccur and a replacement CEM may be required.
Fuel
Result: High sulfur fuel is in use.
Repair: Refer to Special Instruction, M0077352, Soot Antennae Check for C7.1 Engines to check for damage to the aftertreatment system.
Drain the fuel tank, flush the fuel lines, and replace the fuel filters.
Refill the fuel system with fuel of the correct specification.
Proceed to Test Step 4.
Result: High Sulfur fuel is not in use.
Proceed to Test Step 4.
4. Recover the Aftertreatment System
A. Connect to the electronic service tool.
B. Run the engine.
C. Perform the "Aftertreatment Recovery Procedure".
Test
Result: The "Aftertreatment Recovery Procedure" completed successfully.
Return the unit to service.
Result: The "Aftertreatment Recovery Procedure" failed. An error code is generated by the electronic service tool.
Repair: Troubleshoot the error code. Refer to Troubleshooting, "Service Tool Error Identifiers".
Result: The "Aftertreatment Recovery Procedure" failed. No error codes are generated.
A replacement CEM may be required. Contact the Dealer Solutions Network (DSN).