Code No. P1499: Abnormally high DPF temperature <Vehicles with closed type DPF>

FUNCTION

The DPF may be have melting damage if the temperature exceeds the specified value (Refer to GROUP 15 - Exhaust Pipe, Main Muffler and Catalytic Converter - Diesel Particulate Filter (DPF) Inspection ).
The engine-ECU monitors the signals from No. 3 exhaust gas temperature sensor (DPF temperature) to check if the DPF is under the specified temperature.

TROUBLE JUDGMENT

Check Condition

On DPF regeneration

Judgement Criterion

The No. 3 exhaust gas temperature sensor (DPF temperature) detects the abnormally high temperature.

or

The estimated DPF centre temperature exceeds the specified value.

PROBABLE CAUSE

Damage by the DPF with high temperature

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list.

Refer to Data List Reference Table .

Item 119: No. 3 exhaust gas temperature sensor (DPF temperature)

Q. Is the check result normal?

	Replace the DPF. When the DPF is replaced, initialise the learning value (Refer to GROUP 00 - Precautions Before Service - Initialisation Procedure For Learning Value in Diesel Particulate Filter (DPF) System ).

	Perform the diagnosis code classified check procedure for the sensor that has shown an abnormal data value (Refer to Inspection Chart for Diagnosis Code ).