Product Manual

Table Of Contents
83A045R242 (Issue 7) Copyright © 2016 Cummins Inc.
6 Troubleshooting
The following list of codes is not an all inclusive list. For more information about the
fault codes listed or for additional codes, contact your local dealer.
NOTICE
Make sure service personnel are qualified to perform electrical and
mechanical service.
6.1 Engine Is Difficult to Start or Does Not Start
Possible Causes:
1. Battery voltage problem(s)
2. Fuel system issue(s)
3. Air intake restriction above specification
Diagnosis and Repair:
1. Battery voltage problem(s)
a. If battery voltage is low, interrupted, or open, check:
Battery connections
Unswitched battery supply circuit
Fuses
2. Fuel system issue(s)
a. Verify that the manual fuel shutoff valve is open.
3. Air intake restriction above specification
a. Inspect air filter for obstruction. Replace if necessary.
6.2 Code 143 - Engine Oil Pressure Low (Warning)
Logic:
Engine oil pressure is below the low oil pressure warning threshold.
Possible Cause:
1. Lubricating oil level is low
2. External leak
Diagnosis and Repair:
1. Lubricating oil level is low.
a. Check the oil level. Add oil, if necessary.