54
SCR Tampering
Aftertreatment Control Module (ACM) Disconnected
Aftertreatment Inlet NOx sensor disconnected
Aftertreatment Oulte NOx sensor disconnected
DEF Pump Disconnected
DEF Dosing Valve Disconnected
DEF Tank Level Sensor Disconnected
DEF Dosing valve or line blocked.
DEF Pump pressure build up failure
DEF Return Line Blocked or Plugged
Note:
For additional DID information refer
to the Driver Information Display Manual.
Misfilling Diesel or Aftertreatment DEF Tanks
Although diesel fuel and Aftertreatment DEF
caps are clearly labeled and filler necks and
nozzles are different accidents can happen.
Contamination of fluids by- misfilling of
diesel or DEF in the wrong tank may result in
vehicle malfunction.
Results of Misfilling DEF in Diesel Tank
•
Engine may run poorly or not at all
•
Engine injectors may be damaged
•
Exhaust system corrosion may occur
between engine turbocharger and
Aftertreatment DPF
•
On Board Diagnostic (OBD) Diagnostic
Trouble Codes (DTC)
•
Costly repairs
Results of Misfilling Diesel in
Aftertreatment DEF Tank
•
Aftertreatment SCR system may be
damaged by diesel
•
SCR Catalyst may be damaged by diesel
(chemical damage)
•
Emissions may be non-compliant
•
On Board Diagnostic (OBD) Diagnostic
Trouble Codes (DTC)
•
Costly repairs
Warranty and Maintenance
Exhaust Aftertreatment System Maintenance
The vehicle must be taken to an authorized Prevost Service Center to remove the ash from
the Aftertreatment Diesel Particulate Filter and clean the Aftertreatment Doser.
