Section 143 (3.0L - Engine Controls - On Board Diagnostic (OBD), Generic Scan Tool, Engine Codes: AVK, BGN)
WARNING: This page is about a different car, the 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.
- On Board Diagnostic (OBD)
- On Board Diagnostic (OBD)
- Characteristics of On Board Diagnostic (OBD)
- On Board Diagnostic (OBD), technical data
- Malfunction lamp for On Board Diagnostic (OBD)/Malfunction Indicator Lamp (MIL) -K83- in instrument cluster
- Electronic Power Control (EPC) Warning Lamp -K132- in instrument cluster
- Safety precautions
- Connect diagnostic tester
- Select diagnostic function
- Test box, connecting for wiring and component test
- Mode 1: Check measuring values
- Mode 2: Checking operating conditions
- Mode 3: Check DTC Memory
- Mode 4: Reset/erase diagnostic data
- Mode 5: Check oxygen sensor output signals
- Notes
- Test requirements:
- Procedure
- Evaluation test-ID 01: Rich to lean sensor barrier voltage
- Evaluation test-ID 02: Lean to rich sensor barrier voltage
- Evaluation test-ID 07: Minimum voltage at sensor for test cycle
- Evaluation test-ID 08: Maximum voltage at sensor for test cycle
- Evaluation test-ID 129: Current value of oxygen sensor signal
- Evaluation test-ID 130: Specified value of oxygen sensor signal
- Evaluation test-ID 131: Dynamic value
- Evaluation test-ID 132: Shift of oxygen sensor regulation before catalytic converter via oxygen sensor regulation behind catalytic converter
- Final procedures
- Mode 6: Check test results of components that are not continuously monitored
- Mode 7: Check test results of components that are continuously monitored
- Mode 8: Tank leak test
- Mode 9: Vehicle information
- Readiness code
- Diagnostic Trouble Code (DTC) tables:
- On Board Diagnostic (OBD)