Code No. P2463:
No chance of forcible regeneration of DPF
FUNCTION
The engine-ECU monitors the input signals from sensors
to estimate the PM amount loaded to the DPF inside.
If the PM is loaded more than the specified amount, the DPF regeneration is automatically executed
under certain conditions in order to eliminate the PM.
If the PM is excessively loaded, the engine-ECU should not execute the automatic
DPF regeneration. At that time, the engine-ECU should store the diagnosis code P1498. It makes the
engine warning lamp illuminate and allows the DPF warning mark to be shown.
If the engine-ECU estimates that the amount of accumulated PM will increase and
reach the level where the DPF cannot be regenerated after the diagnosis code P01498 is stored,
the diagnosis code P2463 should be stored.
TROUBLE JUDGMENT
Check Condition
Ignition switch is in "ON" position.
Judgement Criterion
The estimated amount of accumulated PM exceeds more than specified amount.
FAIL-SAFE AND BACKUP FUNCTION
The EGR control is stopped (fully closed).
The cruise control is prohibited.
The fuel injection amount is restricted (Output restriction).
The open angle of the accelerator pedal is restricted.
The AS&G control is prohibited.
PROBABLE CAUSE
The PM is abnormally loaded to the DPF inside.
DIAGNOSIS PROCEDURE
STEP 1. Replace the exhaust centre pipe.
1.Replace the exhaust centre pipe. 2.Erase the diagnosis code. 3.Use the M.U.T.-III to perform the initialisation item No.40 "Exchange Service". Initialise
the learning values. (Refer to GROUP 00 -
Precautions before Service -
Initialisation Procedure
For Learning Value In Common Rail Engine <4N1> ). 4.Reconfirm whether the diagnosis code is set.
Inspection chart for diagnosis code (Refer to 
Check end.