Toyota Prado 2.8TD 89663-6A340 / 89661-60K60 Stage 2 DPF Off
Understand the Toyota Prado 2.8TD engine calibration identifiers and the Stage 2 DPF Off label in this WinOLS catalog entry.
The Toyota Prado 2.8TD entry 89663-6A340 / 89661-60K60 identifies an engine-control software record labeled Stage 2 DPF Off. It is associated with the diesel engine control module, which manages fuel injection and other engine functions as well as the diesel particulate filter, or DPF, system.
What the controller does
The engine control module uses sensor information to regulate injection and combustion across changing driving conditions. It also manages emissions-related operation, including DPF regeneration. During regeneration, exhaust temperatures rise to burn accumulated soot from the filter.
The catalog lists 89663-6A340 and 89661-60K60 together for the Prado 2.8TD. The identifiers distinguish this record from other Toyota engine-control calibrations, but the catalog name alone does not establish the vehicle's model year or a complete fitment list.
Stage 2 and DPF Off
Stage 2 is a tuning label rather than a standardized Toyota specification. In this filename it indicates a modified calibration, but it does not disclose the exact changes or performance gains. The DPF Off label indicates a modification intended to disable DPF-related control or monitoring. The filename does not show exactly which functions were changed or whether the physical filter is present.
DPF-related fault messages, regeneration behavior and exhaust emissions can therefore differ from those of a stock calibration. A DPF-off modification may violate emissions laws and can affect inspection eligibility. For diagnosis, the distinction between the stock engine-control strategy and the labeled modified file matters when interpreting DPF faults or unexpected regeneration behavior.