Car Diagnostic Pro decodes every signal your vehicle produces — from hidden fault codes buried in proprietary ECU modules, to real-time engine telemetry streaming at millisecond precision. Workshop-level diagnostics, on your phone.
From quick fault scans to factory-level UDS deep dives — diagnose every system your vehicle has.
One-tap retrieval and clearing of stored, pending, and permanent emission-related DTCs across all vehicle makes. Read and reset check engine light instantly.
Traverse every responding ECU module in the vehicle — Engine, ABS, SRS, Transmission, and beyond. Generates a multi-page health report with AI-powered fault analysis.
Extract the vehicle's unique identity data from Mode $09 — VIN traceability, calibration IDs, and ECU firmware verification for accurate part matching.
Break through standard OBD boundaries. Access manufacturer-specific UDS services (19 02 FF) to read hidden faults from VW, Porsche, Mercedes, Toyota, Ford and more.
Real-time telemetry, acceleration testing, fuel analysis, and acoustic diagnostics — all while you drive.
Stream all supported Mode $01 PIDs in real-time. PRO unlocks custom multi-parameter matrix monitoring — fuel trims, MAP, throttle position, ignition timing and more.
Synchronized dual-source measurement: OBD vehicle speed sensor + phone accelerometer G-force. Capture launch performance, throttle response curves, and torque delivery across every speed segment.
Calculate instantaneous and trip-average fuel economy using real air-fuel ratio and injector mass flow data. Track your L/100km curve as you drive.
Capture the critical cold-crank voltage drop at ignition with high-frequency sampling. Detect battery aging and capacity loss before you're stranded in winter.
Industry-first composite NVH diagnostic: microphone frequency capture + OBD speed tracking generates a unique noise-vs-speed scatter plot. Pinpoint rattles, vibrations, and resonance zones.
Comprehensive emission readiness analysis, component threshold testing, and oxygen sensor waveform capture.
Know if you'll pass before you go. A targeted readiness scoring engine evaluates every emission subsystem against local inspection standards — instant pass/fail prediction.
Check each post-treatment monitor's ready/not-ready state, MIL-on distance traveled, warm-up cycles since fault clear, and continuous monitoring system status.
Decode hidden manufacturer test results — cylinder misfire counts, EGR flow limits, catalyst efficiency thresholds. See if components barely passed or are comfortably healthy.
Extract Mode $05 legacy O2 sensor test data — individual upstream/downstream probe voltage readings, response limits, and pass/fail condition scores.
High-resolution real-time waveform plotting of upstream and downstream O2 sensors. Analyze closed-loop oscillation patterns, response lag, and catalytic converter filtration efficiency.
A dynamic gauge layout engine that calculates the optimal grid for your screen — whether portrait or landscape, 1 gauge or 8. Every gauge maintains a perfect physical square ratio with zero wasted space.
Auto-calculates the maximum gauge size based on screen dimensions and gauge count. In landscape with 4 gauges, a unique 1-2-1 diamond layout maximizes visual impact.
Rotate your phone on its car mount — all gauges and data streams instantly recompose their boundaries and apply the new grid. Zero lag, zero dead zones.
Create multiple dashboard tabs with your preferred sensor combinations. Default gauges are free — PRO unlocks unlimited custom page creation.
Car Diagnostic Pro is now available on both platforms. Get workshop-grade vehicle intelligence on your phone today.