Automotive

OBD-II Diagnostics

Reading and interpreting OBD-II data on 1996+ US passenger vehicles: the 16-pin J1962 DLC, CAN (ISO 15765) and legacy protocols, generic P0 vs manufacturer-specific P1 codes, freeze-frame data, live data interpretation (MAF g/s, STFT/LTFT, coolant temp, O2 activity), drive cycle and readiness monitors, and a five-step confirm-pull-freeze-live-isolate diagnostic sequence that avoids parts-cannon diagnosis.