TSB210127

Service Bulletin Details

Public Details for: TSB210127

This technical service bulletin describes the verification and resolution of misfire fault codes without any audible misfire or performance loss (false misfire). This can be caused by aftermarket exhaust gas pressure sensors not providing e


- 9999 -

Models from 9999
9999 CUMMINS B6.7N
9999 CUMMINS ISX12
9999 CUMMINS L9N 
6/28/2021
Misfire Fault Codes Caused by Aftermarket Exhaust Gas Pressure Sensor
Technical Service Bulletin
Technical Service Bulletin: TSB210127
Released Date: 11-Jun-2021
Misfire Fault Codes Caused by Aftermarket Exhaust Gas Pressure Sensor
Misfire Fault Codes Caused by Aftermarket Exhaust Gas Pressure
Sensor
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
B6.7N CM2380 B150B
ISX12N CM2380 X120B
L9N CM2380 L124B
L9N CM2380 L130B
L9N CM2380 L142B
Issue
Symptom:
Misfire fault codes without any audible misfire or performance loss (false misfire).
Fault Codes: 5895, 5896, 5897, 5898, 5899, 5911, 5914, 6413, 6425, 6426, 6427, 6428, 6429, 6431
Possible low power or derate complaint caused by fault code(s).
Root Cause:
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6/28/2021
Misfire Fault Codes Caused by Aftermarket Exhaust Gas Pressure Sensor
Aftermarket exhaust gas pressure sensor not providing equivalent signal as genuine Cummins® exhaust gas pressure sensor.
Verification
Verify exhaust gas pressure sensor is a genuine Cummins® part. See corresponding Service Manual. Reference Procedure 019-376
in Section 19.
Service Instructions
If an aftermarket exhaust gas pressure sensor is found, replace with correct part number of genuine Cummins® exhaust gas
pressure sensor. See corresponding Service Manual. Reference Procedure 019-376 in Section 19.
Document History
Date
2021-6-10
Details
Module Created
Last Modified: 11-Jun-2021
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