Symptom Tree t147
| Cause | Correction |
|---|
For further information on vehicles that have the diesel particulate lamp illuminating frequently, high exhaust temperature lamp (if equipped) illuminating frequently, and/or requires frequent automatic/stationary regenerations, use the following troubleshooting symptom tree.
|
Electronic fault codes active or high counts of inactive fault codes |
View and troubleshoot the fault codes with INSITE™ electronic service tool. Refer to the Troubleshooting and Repair Manual, CM2250 Electronic Control System, Bulletin 4022225. |
 |
|
OEM or customer selected inhibit feature is preventing active regeneration during vehicle operation and requiring frequent stationary regenerations |
Check the aftertreatment system inhibit feature with INSITE™ electronic service tool. Change the vehicle route and/or duty cycle so the inhibit feature does not prevent active regeneration or contact the OEM/customer about changing inhibit features. |
|
|
Extended operation of engine in low duty cycle, extended idling and/or low ambient temperatures |
Check the aftertreatment system trip information with INSITE™ electronic service tool. Low duty cycle applications can possibly require more active regeneration time to keep the aftertreatment system functioning correctly. Change the vehicle route and/or duty cycle to increase the load on the engine, in order to decrease the amount of active regeneration time. |
|
|
Aftertreatment Diesel Particulate Filter is full of ash |
The maintenance interval for ash cleaning has been reached. See the corresponding Owners or Operation and Maintenance manual for the engine being serviced. Refer to the Aftertreatment Diesel Particulate Filter – Excessive Ash Cleaning Troubleshooting Symptom Tree. |
|
|
Engine produces excessive black smoke |
Refer to the Troubleshooting Performance Symptom Tree. |
|
