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Home >> Audi >> 2004 >> TT Base, 2D Convertible >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> 1.8L - Turbo Generic Scan Tool Engine Code(S): Amu, BEA, ATC, AWP >> 01 - On Board Diagnostic (OBD) >> Readiness code >> Readiness code, reading out >> Evaluation PID 01: System status information (right 8-digit number block:)
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Evaluation PID 01: System status information (right 8-digit number block:)

Meaning if display position = 0
1 2 3 4 5 6 7 8 Diagnostic function
0               Exhaust gas recirculation OK
  • Not available/always "0" with some engine codes
  0             Oxygen sensor heater OK
    0           Oxygen sensors OK
      0         Air conditioning system OK
  • Not available/always "0"
        0       Secondary Air Injection (AIR) system OK
          0     EVAP canister system (tank ventilation system) OK
            0   Catalytic converter heater OK
  • Not available/always "0"
              0 Catalytic converter OK

If a 1 is displayed instead of a 0 in the 8-digit number block: