Description
The KONNWEI KW890 is a multifunction 3-in-1 vehicle tool that combines a car OBD2/EOBD diagnostic scanner, a 12 V battery tester, and an oil service light reset function in one handheld unit. It works on most 1996 and newer 12 V gasoline and diesel vehicles that support OBD-II protocols like CAN, ISO9141, KWP2000, and J1850.
Diagnostic Features:
• Reads and clears engine fault codes (DTCs) to help identify issues and turn off the check engine light.
• Displays live engine data graphically and in text.
• Provides O2 sensor tests, EVAP system checks, freeze-frame data, and I/M readiness status for emissions testing.
Battery Testing:
• Tests 12 V automotive batteries including ordinary lead-acid, AGM flat plate, AGM spiral, GEL, EFB, and lithium types.
• Measures battery health (State of Health), voltage, internal resistance, and Cold Cranking Amps (CCA), and performs cranking and charging system tests.
Oil Service Reset:
• Allows reset of the engine oil life/service light after maintenance to restart the service interval tracking on the vehicle.
• Covered on many makes and models, though functionality depends on the specific vehicle.
Display & Controls:
• Features a 2.8″ color LCD screen with intuitive navigation.
• Supports multiple languages including English, French, German, Spanish, Russian, Italian, and Polish.
Package Includes:
Main unit, OBD2 cable, battery clamp cable, USB cable (for updates/printing), user manual, and storage bag.
In summary, the KW890 is a versatile all-in-one automotive tool suitable for DIY enthusiasts and technicians who want basic engine diagnostics, battery health analysis, and service light reset functions without multiple separate devices.





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