Camry 2.0 1AZ-FE 89663-06B40_ST1_E2 SV 4000 Firmware
A catalog overview of Toyota Camry 2.0 1AZ-FE firmware 89663-06B40_ST1_E2 SV 4000 and its variant labels.
89663-06B40_ST1_E2 SV 4000 is a catalog entry for a Toyota Camry 2.0 with the 1AZ-FE engine. The 89663-06B40 identifier belongs to Toyota’s engine-control calibration family, associated with the engine control module and its management of engine operation.
The engine controller uses sensor information to regulate functions such as fuel delivery and ignition timing. Those controls affect how the engine starts, responds to the accelerator and operates under changing load. The catalog identifier alone does not establish which of those settings this particular revision changes.
Understanding the variant name
The suffix ST1_E2 SV 4000 distinguishes this file from the related catalog entry named 89663-06B40. ST1 commonly denotes a Stage 1 modified variant, while E2 is often used for an emissions-related modification. The exact changes and the meaning of SV 4000 are not established by the filename alone.
The named variant should therefore be treated as a separate calibration from the file listed without those suffixes, rather than as proof of a specific power gain or operating change.