VDIAGTOOLVD30 Car Code Reader, Enhanced Mode 6 OBD2 Scanner for Turn Off Check Engine Light, CAN Diagnostic Tool, Universal Automotive Check Engine Code Reader with One-Click Smog Check All 10 Modes of OBDII Tests Vdiagtool OBDII scanner can perform all 10 modes of OBDII tests for complete OBD2 diagnosis, including reading codes, erase codes, view live data, patented one-click smog check, freeze frame data, O2 monitor test, on-board monitor test, component test, view vehicle information, module present. VD20 scanner is the most complete & cost-effective OBD2 code reader for home mechanics and DIYers to solve check engine light issues and daily quick checks. Turn off Check Engine Light(MIL) The check engine light (CEL) illuminates when your vehicle's computer believes there is a problem that could affect, or is affecting your car's emissions control system. This check engine code reader brings a fast access to scan, read the car emissions-related error code (DTCs), troubleshooting to find the root causes of problems, clear the trouble code and turn off the MIL (Malfunction Indicator Light) after fixed. Read/Clear Codes and Quick DTC Definition Lookup A Diagnostic Trouble Code (DTC) is set in a vehicle's onboard computer when a fault occurs in any monitored system. DTC codes are sent to the vehicle's instrument panel to trigger a warning light. This car check engine light scanner retrieves generic codes, manufacturer specific codes, pending codes, permanent codes and displays DTC definitions on the TFT screen, find out the root causes and clear the codes after fixed. Patented One-Click Smog Check & User-Friendly Design Vdiagtool engine analyzer features patented I/M One-Click Readiness Key for quick State Emissions readiness check(smog check) and drive cycle verification. Coming with a TFT color display to show DTC definitions more clearly, a built-in speaker provides an audible indication, an LED Indicator, and a long cable, is super easy to use even if you are new to a car repair 4 IN 1 Comprehensive Live Data and Retrieve Freeze Frame This engine scanner code reader can read data from vehicle sensors, such as Engine RPM, Intake air temperature, Short/Long term fuel, Misfire data, Throttle position, Engine coolant temperature, Oxygen sensor voltages, Mass air flow and ect. Display 4 PIDs simultaneously and merge them into one to compare. Retrieve freeze frame: DTCFRZF, FUELSYSA, ETC, SHRTFT1, LONGFT1, MAP, RPM, VSS, IAT....etc, which is a valuable diagnostic aid. Lifetime Software Update & Multi-Lingual Menu