Retrieving Codes
- Open rear seat ashtray located at rear of center console. Remove cover to access DLC. See Fig 1
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- Connect VAG 1551 scan tool or generic scan tool to DLC. Turn ignition on or start engine and let it idle. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION
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- If no communication is possible with PCM, verify connection for scan tool is okay. If scan tool connection is okay, check wiring harness between DLC and PCM for open or short circuit. If wiring harness is okay, PCM is possibly faulty. See PCM VOLTAGE & GROUND CHECK
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Courtesy of AUDI OF AMERICA, INC.