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Diagnostic Trouble Code(s) (DTC): Notes
- DTC is a code consisting of 9-digit alphanumeric characters which are stored when each module detects a malfunction.
- The first 5 digits of the DTC indicate which system or part and what kind of malfunction is occurring. Digits 6 to 7 add more detailed information on the malfunction content (such as open/short circuit, characteristic malfunction).
- The last 2 digits of the DTC are called status byte indicating malfunction conditions such as pending code, past/current malfunctions, and the warning light illumination condition.
 Courtesy of MAZDA MOTORS CORP.
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