P2459 Toyota Diesel Particulate Filter Regeneration Frequency
Possible causes
– Exhaust leak
– Improperly installed or loose Exhaust Gas Temperature (EGT)
– Low engine compression
– Corroed fuel injector
– Water in the fuel system
– Improperly installed or loose Exhaust Gas Temperature (EGT)
– Low engine compression
– Corroed fuel injector
– Water in the fuel system
What about the obd code?
The P2459 Toyota will set if the Engine Control Module (ECM) detects that the average time between completed regenerations is less than a calibrated threshold.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2459 Toyota Description
The particulates in the exhaust gases are collected by the Diesel Particulate Filter (DPF). When the filter becomes saturated with particulates, they are incinerated by a regeneration process. The regeneration process increases the exhaust gas temperature, warning the Diesel Oxidation Catalyst (DOC) first, the warning the DPF. The Engine Control Module (ECM) monitors the system with inputs from two Exhaust Gas Temperature (EGT) sensors 1 and 2 and the exhaust differential pressure sensor.
Toyota Vehicle:Toyota Prius,Toyota Celica,Toyota Supra,Toyota Carina,Toyota Camry,Toyota MR2,Toyota Aygo,Toyota 4Runner,Toyota Avalon,Toyota Camry,Toyota Corolla,Toyota FJ Cruiser,Toyota Highlander,Toyota Land Cruiser,Toyota Matrix,Toyota Prius,Toyota RAV4,Toyota Sequoia,Toyota Sienna,Toyota Solara,Toyota Tacoma,Toyota Tundra,Toyota Yaris,