AUTOPHIX DM5900 4-System OBD2 Scanner - Engine ABS SRS Transmission

A plain code reader only talks to the engine computer, so when the transmission warning light or a hard-shift complaint shows up it leaves you guessing. The AUTOPHIX DM5900 reads four systems, Engine, ABS, SRS airbag, and Transmission, so you can pull the actual transmission trouble codes, read freeze-frame data from when the fault set, and clear the light once the repair is done. On most 1996-and-newer OBDII vehicles that means you can tell a slipping-clutch or solenoid code from a wheel-speed-sensor code before you ever drop the pan.

Live data is where it earns bench time. Stream engine and transmission PIDs in real time, watch RPM, coolant temp, and vehicle speed as text or a graph, and catch an intermittent sensor acting up instead of chasing a code that already cleared itself. It also runs the full generic OBDII set, I/M readiness, O2 sensor and EVAP monitor status, and DTC lookup, so it doubles as a pre-smog checker before an emissions test.

The built-in battery, starter, and charging-system test is the bonus a lot of scanners in this range skip. Clamp the included leads on the battery and it checks battery condition, cranking performance, and alternator output, supporting flooded, AGM, EFB, and GEL batteries, so you can rule out a weak battery before blaming the transmission electronics. It has a 3.5 inch color screen, pairs with the AUTOPHIX app for saved reports, live data, and a HUD mode, and carries free lifetime software updates with a 2-year warranty. Note it is a read, clear, and live-data tool, not a bidirectional or service-reset scanner. Confirm your specific year and model before ordering, since system coverage varies by vehicle.