OBD Auto Doctor User Manual for iPhone & iPad
Diagnostic Trouble Codes
Diagnostics Trouble Codes (DTCs) are codes that the vehicle's electronic
control unit (ECU) generates when it detects malfunction or other issues.
Freeze Frame
Freeze Frame is a captured recording of the engine's conditions at the time a
malfunction is detected. The Freeze Frame contains DTC that caused the
malfunction and snapshot of sensor readings.
DTC Database
The app contains offline trouble code database for searching and browsing all
the trouble codes. The DTC database contains over 14000 trouble codes that
the software has description for.
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