Turn your mobile phone into a OBD-2 Scanner and Check Errors. Maitri OBD Diagnostic App Support all OBD-2 compatible Cars & 2-wheeler. Maitri OBD Diagnostic application for ELM 327. Maitri OBD app. can read OBD-2 Data/Read PID with gauge features and Clear the DTC. Maitri OBD app comes with many exciting features like, Read OBD-2 Data/Read PID in Numerical/Graph & Gauges/ Clear DTCs/Online-Offline DTC search/App options comes in multi langues & finally comes with Technical Support option also.