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 TestsVdiagtool 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 LookupA 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 DesignVdiagtool 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 FrameThis 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 MenuVD30 car diagnostic reader comes with lifetime Free software updates via internet and multilingual menu options like English, French, German, Russian, Spanish, Italian, Portuguese, Hungarian, Swedish, Slovak, Czech.Please note: Update support is limited to a windows based device, NOT SUPPORT MAC or iOS.Complete 10 Modes of OBDII/EOBD TestsRead CodesVD30 engine fault code reader can access the powertrain module to pull generic codes(P0, P2, P3, and U0), manufacturer specific codes((P1, P3, and U1) and pending codes to pinpoint the fault locations that lights up the check engine light. Reading codes can be done with key on engine off or with key on engine running depending on the specific vehicle it's testing.Erase CodesErase the DTCs when proper fix needed has been done and the fault is not longer present. Erasing the fault codes may allow the auto scanner to delete not only the codes from the vehicle's on-board computer, but also Freeze Frame data and manufacturer specific enhanced data.>>>Note: Clearing codes should be performed with key on engine off (KOEO).Live DataLive Data functions allows you to view the live PID(parameter identification data) data of vehicle's computer module(s) in text, graph to check the status of various sensors. It also enables you to record manually or automatically 5 frames of live data before and several frames after a trigger event like when a DTC is set and for later data playback and review.Freeze Frame DataFreeze Frame Data allows you to view the vehicle's operating parameters at the moment a DTC is detected The parameters may include engine speed (RPM), engine coolant temperature (ECT), or vehicle speed sensor (VSS) etc. These information will aid the technician by allowing the parameters to be duplicated for diagnostic and repair purposes.I/M Readiness Check(Smog Check)VD30 car diagnostic scanner features patented One-Click I/M readiness Status Key to check the operations of the Emission System and to make sure your vehicle is ready for the annual State Emissions Readiness Check(Smog Check).O2 Monitor TestThe O2 Monitor Test function allows retrieval and viewing of O2 sensor monitor test results for the most recently performed tests from the vehicle's on-board computer. These tests are noton-demand tests and they are done automatically with test results saved in the on-board computer's memory.>>