Section 167 (On Board Diagnostic (OBD) - 4.2L V8 5V - BBD)
WARNING: This page is about a different car, the 2003 Audi S6 and 2002 Audi S6. However, it is still accessible from the selected car via links, so may be relevant.
- On Board Diagnostic (OBD)
- Motronic systemMotronic system, On Board Diagnostic (OBD)
- Technical data
- Malfunction Indicator Lamp (MIL) -K83-, function
- Electronic Power Control (EPC) warning lamp -K132- (for electronic throttle), function
- Vehicle Diagnostic, Testing and Information System VAS 5051, connecting and selecting engine control module
- V.A.G 1551 Scan Tool, connecting and selecting engine control module
- Diagnostic Trouble Code (DTC) memory, checking and erasing
- Diagnostic Trouble Code (DTC) table
- Output Diagnostic Test Mode (DTM)
- Notes
- Output DTM sequence for all vehicles up to m.y. 2001
- Notes
- Test conditions
- Actuating Evaporative emission (EVAP) canister purge regulator valve -N80-
- Actuating Secondary Air Injection (AIR) solenoid valve -N112-
- Actuating Secondary Air Injection (AIR) pump relay - J299-
- Actuating Intake manifold change -over valve -N156-
- Actuating camshaft adjustment valves
- Actuating Leak Detection Pump (LDP) -V144- of tank ventilation system
- Actuating Intake Manifold Tuning (IMT) valve 2 -N261- (test omitted in S6 models)
- Checking left and right engine mountings
- Actuating injectors
- Output DTM sequence for all vehicles from m.y. 2002
- The output Diagnostic Test Mode (DTM) activates the following components in the stated order:
- Test conditions
- Actuating Evaporative emission (EVAP) canister purge regulator valve -N80-
- Actuating Secondary Air Injection (AIR) solenoid valve -N112-
- Actuating Secondary Air Injection (AIR) pump relay - J299-
- Actuating Intake manifold change -over valve -N156-
- Bank 2, actuating valve for camshaft adjustment
- Actuating Leak Detection Pump (LDP) -V144- of tank ventilation system
- Intake Manifold Tuning (IMT) valve 2 -N261- (A6 models)
- Basic setting
- Engine Control Module (ECM), coding
- Measured value block, reading
- Readiness code
- Notes
- The readiness code is reset to
- Readiness code, reading
- Readiness code, generating
- Special tools and workshop equipment required
- Test conditions
- Operation 1: Checking DTC memory
- Operation 2: Erase DTC memory
- The readiness code can be generated in two ways:
- Operation 3: Diagnosis of fuel tank breather valves (not in all S6 models)
- Operation 4: Diagnosis of fuel supply system
- Operation 5: Checking oxygen sensor heater
- Operation 6: Diagnosis of oxygen sensor aging before catalytic converter
- Operation 7: Diagnosis of oxygen sensor condition behind catalytic converter.
- Operation 8: Diagnosis, oxygen sensor control system
- Operation 9: Catalytic converter diagnosis
- Operation 10: Diagnosis of secondary air system
- Operation 11: Reading readiness code
- Motronic systemMotronic system, On Board Diagnostic (OBD)