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July 20, 2005 Service bulletin

Three way catalyst, catalytic efficiency diagnostic trouble codes (DTCS) stored in DTC memory

Audi technical service bulletin 0504 for 2000-2001 Audi A4 and 2000-2001 Audi A6.

Bulletin number
0504
Component
Engine and engine cooling: exhaust system: emission control: catalytic convertor
Summary
Three way catalyst, catalytic efficiency diagnostic trouble codes (dtcs) stored in dtc memory. Tt

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