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Home >> Audi >> 2000 >> A4 Base, 1.8 C, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - Introduction >> Self-Diagnostic System >> Diagnostic Trouble Codes
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Diagnostic Trouble Codes

The Powertrain Control Module (PCM) can identify malfunctions and store them in memory in the form of a Diagnostic Trouble Code (DTC). DTCs are stored until memory is erased. If positive battery cable or PCM connector is disconnected, DTCs are erased.