The fault indicates that the High Idle Regeneration (HIR) was aborted due to the Diesel Oxidation Catalyst (DOC) outlet temperature not reaching the expected target temperature to complete a HIR. If there are any other regeneration or fuel system related faults address those first. The CEL and MIL lamp will remain ON until a fault is resolved or a successful regeneration is completed.
- Low Fuel Compensation Pressure
- Exhaust Leaks
- Fuel Leaks
- Sticking Hydrocarbon Doser Injector valve(high doser line pressure)
- DOC outlet temperature not responding