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Home >> Audi >> 2003 >> A8 Quattro >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (On Board Diagnostic (OBD) - Generic Scan Tool - 4.2L V8 5V - Art, Awn, BBD) >> ST-Generic Sean Tool >> Mode 5: Check oxygen sensor output signals >> Work procedure

Work procedure

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2004 Audi A6, 2003 Audi S6, 2003 Audi A6, 2002 Audi S6, and 2002 Audi A6. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
  • Bank 1 = cylinder bank 1 in direction of travel, right; Bank 2 = cylinder bank 2 in direction of travel, left.
  • When selecting the diagnostic mode, the entry is always performed in "Bank 1 sensor 1".
  • If either the VAG1551/1552 Scan Tool (ST) or VAS5051/5052 Vehicle Diagnostic, Testing and Information System is used for checking the output of oxygen sensor signals, the respective oxygen sensor can be selected by pressing button 1, 2, 5 and 6:
    • Button 1 = Bank 1 sensor 1,
    • Button 2 = Bank 1 sensor 2,
    • Button 5 = Bank 2 sensor 1,
    • Button 6 = Bank 2 sensor 2.
TEST-ID EVALUATION (MODE 5)

Test-ID(1) Diagnostic text Evaluation
01: Rich to lean sensor barrier voltage See Evaluation test-ID 01: Rich to lean sensor barrier voltage  .
02: Lean to rich sensor barrier voltage See Evaluation test-ID 02: Lean to rich sensor barrier voltage  .
07: Minimum voltage at sensor for test cycle See Evaluation test-ID 07: Minimum voltage at sensor for test cycle  .
08: Maximum voltage at sensor for test cycle See Evaluation test-ID 08: Maximum voltage at sensor for test cycle  .
09: Time period between sensor shift procedures (half value) See Evaluation test-ID 09: Time period between sensor shift procedures (half value)  .
48: "Rich"-shift of oxygen sensor regulation before catalytic converter via oxygen sensor regulation behind catalytic converter See EVALUATION TEST-ID 48: "RICH"-shift of oxygen sensor regulation before catalytic converter via oxygen sensor regulation behind catalytic converter  .
49: "Lean"-shift of oxygen sensor regulation before catalytic converter via oxygen sensor regulation behind catalytic converter See EVALUATION TEST-ID 49: "LEAN" -shift of oxygen sensor regulation before catalytic converter via oxygen sensor regulation behind catalytic converter  .
50: Time period between sensor shift procedures See Evaluation test-ID 50: Time period between sensor shift procedures  .
(1) Test IDs that are not relevant are not listed.
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