DTC status-byte decoder
Read all eight UDS diagnostic status flags and apply the ECU’s supported-status mask. Keep the DTC identifier alongside your result.
Your result
ON YOUR DEVICEEnter your inputs and calculate to see the result.
Keep status and support separate.
Every bit is shown even when the ECU does not support it. The active count includes only set, supported flags. A confirmed DTC records that confirmation criteria were reached; it does not by itself establish that a fault is present now. DTC text descriptions require the applicable ECU diagnostic data.
Supported active flags = status byte AND availability mask