Troubleshooting

Recommended Actions
Note: The procedures have been listed in order of
probability. Complete the procedures in order.
Table 57
Troubleshooting Test Steps
Values Results
1. Diagnostic Codes
A. Connect the electronic service tool to the diagnostic
connector.
B. Use the electronic service tool to check for an active 5055
diagnostic code.
Diagnostic
codes
Result: A 5055 diagnostic code is active.
Proceed to Test Step 2.
Result: A 5055 diagnostic code is not active.
Proceed to Test Step 3.
2. Maintenance Interval Schedule
A. Use the electronic service tool to check the number of
hours since the last “Engine Oil Life Reset” was performed.
B. Compare the number of hours since the last “Engine Oil
Life Reset” to the maintenance interval for an oil change. Re-
fer to Operation and Maintenance Manual, “Maintenance In-
terval Schedule”.
Greater than oil
change interval
Result: The number of hours since the last “Engine Oil Life
Reset” is greater than the maintenance interval for an oil
change.
Change the engine oil and perform the “Engine Oil Life Reset”
. Refer to Operation and Maintenance Manual, “Engine Oil
and Filter - Change”.
Result: The number of hours since the last “Engine Oil Life
Reset” is less than the maintenance interval for an oil change.
Proceed to Test Step 3.
3. Excessive Use of Active Regeneration
Note: This step is only applicable to engines equipped with a
wall flow DPF.
A. Excessive use of active regeneration may cause excessive
fuel in the engine oil. Refer to Troubleshooting, “Diesel Partic-
ulate Filter Active Regeneration Occurrence Is Excessive”.
Excessive
regeneration
Result: There is excessive use of active regeneration.
Make any necessary repairs. Refer to Troubleshooting, “Die-
sel Particulate Filter Active Regeneration Occurrence Is
Excessive”.
Change the engine oil and perform the “Engine Oil Life Reset”
. Refer to Operation and Maintenance Manual, “Engine Oil
and Filter - Change”.
Result: There is no excessive use of active regeneration.
Proceed to Test Step 4.
(continued)
116 UENR0612-07
Symptom Troubleshooting
This document has been printed from SPI2. NOT FOR RESALE