Toyota Camry 2.5 USA Firmware 89663-06Q41 / 89661-0X651 GEN3 EVAP OFF
Learn what the Toyota Camry 2.5 USA ECU firmware identifiers and EVAP OFF label mean for evaporative-emissions monitoring.
Toyota Camry 2.5 USA 89663-06Q41 / 89661-0X651 GEN3 EVAP OFF is cataloged as an engine-control firmware variant with an evaporative-emissions system modification. The EVAP OFF label indicates that the software is intended to disable EVAP-related monitoring or fault reporting. The catalog does not specify exactly which tests or diagnostic codes are affected.
Engine control and the EVAP system
The 89661-0X651 and 89663-06Q41 identifiers belong to Toyota engine ECU part-number families. The engine ECU manages functions such as fuel injection, ignition timing and emissions controls. In this entry, the stated application is a US-market Camry with a 2.5-liter engine.
The EVAP system captures fuel vapor from the tank in a charcoal canister. Under suitable operating conditions, the engine draws the stored vapor into the intake to be burned. The ECU also runs checks intended to detect leaks and other faults in the system.
What the variant label means
EVAP OFF identifies this catalog entry as a modified variant rather than a description of normal stock EVAP monitoring. Depending on the calibration, such a modification can prevent an EVAP fault from turning on the check-engine light. It does not repair a leak, failed valve or other physical defect, and the label alone does not establish whether purge operation itself has been changed.
GEN3 is part of the catalog label. The available identifiers do not establish a more specific meaning for it or identify other changes in this file. The listed price is 8,000 rubles.
Disabling emissions diagnostics can affect inspection readiness and may be unlawful for road use. An EVAP-related warning should be diagnosed against the vehicle’s actual components and calibration.