Provisional DTCs

PROVISIONAL DTC's [SCAN TOOL MB991958 OBD-II Test Mode - Results (Mode 7)]
The scan tool will display the Provisional DTC's reported by engine control module (ECM) if the ECM detects some malfunction for "Misfire", "Fuel System" and "Comprehensive" monitoring during a SINGLE Driving Cycle. The intended use of this data is to assist the technician after a vehicle repair and after clearing diagnostic information by reporting test result after a SINGLE Driving Cycle. Note that the test results reported by this mode do not necessarily indicate a faulty component/system. If test results indicate a failure after ADDITIONAL (consecutive) driving then the Malfunction Indicator Lamp (SERVICE ENGINE SOON) will be illuminated and a DTC will set.