TSB180138-031420

Troubleshooting Fault Codes 1864 and 5656
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Technical Service Bulletin
Technical Service Bulletin: TSB180138
Troubleshooting Fault Codes 1864 and 5656
Released Date: 14-Mar-2019
Troubleshooting Fault Codes 1864 and 5656
Warranty Statement
The information in this document has no effect on present warranty coverage or repair practices, nor does it authorize TRP or Campaign actions.
Contents
Product Affected
• L9N CM2380 L124B
Issue
Symptom:
• FC1864 and/or 5656 logging with an engine control module (ECM) calibration code revision prior to ECM calibration code revision level listed in
Table 1 below.
Root Cause:
• ECM calibrations are allowing normal oxygen sensor response to log fault codes 1864 and/or 5656.
Verification
Before troubleshooting FC 1864 and/or 5656, use INSITE™ electronic service tool to check for active or inactive counts of fault codes 1864 and/or 5656
and check the ECM code.
Resolution
• If the electronic control module (ECM) calibration code and revision is included in Table 1 below, troubleshoot the fault code. See L9N CM2380
L124B Fault Code Troubleshooting Manual, Bulletin 5467495.
• If ECM calibration code and revision is not found in Table 1, update engine ECM calibration
code to latest revision, then operate unit under conditions for running diagnostic, which can be found in the L9N Fault Code Troubleshooting Manual, S
If fault code does not return, no further action is required.
Table 1, ECM Calibration Codes
JG10001.04
JG10009.04
JG10017.04
JG10025.04
JG10033.04
JG10041.04
JG10002.04
JG10010.04
JG10018.04
JG10026.04
JG10034.04
JG10042.04
JG10003.04
JG10011.04
JG10019.04
JG10027.04
JG10035.04
JG10043.04
JG10004.04
JG10012.04
JG10020.04
JG10028.04
JG10036.04
JG10044.04
JG10005.04
JG10013.04
JG10021.04
JG10029.04
JG10037.04
JG10045.04
JG10006.04
JG10014.04
JG10022.04
JG10030.04
JG10038.04
JG10046.04
JG10007.04
JG10015.04
JG10023.04
JG10031.04
JG10039.04
JG10047.04
JG10008.04
JG10016.04
JG10024.04
JG10032.04
JG10040.04
JG10048.04
Service Instructions
• Do not replace oxygen sensors for FC1864 and/or FC5656 unless it has logged while running an ECM calibration code and revision level shown in
Table 1, and proper troubleshooting has led to oxygen sensor replacement.
Document History
Date
Details
2018-10-15
Module Created
2019-2-21
Combined FC1864 and FC5656 solutions
Last Modified: 14-Mar-2019
https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2018/tsb180138.html
3/18/2019