2.8L - On Board Diagnostic (OBD) - AFP (A4 Platform)

• 01 - On Board Diagnostic (OBD)
  • On Board Diagnostic (OBD)
    • On Board Diagnostic (OBD), features
    • Malfunction Indicator Lamp (MIL), significance
    • Malfunction Indicator Lamp (MIL), checking (through m.y. 1999)
      • Notes
      • Test requirements
      • Functional check
    • Malfunction Indicator Lamp (MIL), checking (from m.y. 2000)
      • Functional check
    • Electronic Power Control (EPC) warning lamp in instrument cluster, significance (through m.y. 1999)
      • Notes
      • Special tools and equipment
      • Test requirements
      • Functional check
    • Electronic Power Control (EPC) warning lamp in instrument cluster, significance (from m.y. 2000)
      • Notes
      • Functional check:
    • On Board Diagnostic (OBD), technical data
      • Control module identification
        • Notes
        • Technical data
        • Functions which can be selected when using the scan tools VAG1551/1552 or VAS5051
        • Selectable functions (mode) in address word 33, CARB / OBD II
    • VAG1551 Scan Tool (ST), connecting and selecting functions
      • Special tools and equipment
      • Requirements
      • Test procedure
    • VAS5051 vehicle diagnostic, testing and information system, connecting, and engine control module, selecting
      • Notes
      • Special tools and equipment
      • Requirements
      • Test procedure
  • Diagnostic Trouble Code (DTC) memory
    • Diagnostic Trouble Code (DTC) memory, checking and erasing (scan tool functions 02 and 05)
      • Special tools and equipment
      • Test procedure
      • Automatic test sequence
  • Diagnostic Trouble Code (DTC) table: SAE P0 codes
    • Notes
    • DTCs P0101 to P0638, VAG 16485 to 17022
  • Diagnostic Trouble Code (DTC) table: SAE P1 codes
    • Notes
    • DTCs P1102 to P1693, VAG 17510 to 18101
  • Output Diagnostic Test Mode (DTM) (scan tool function 03)
    • Output Diagnostic Test Mode (DTM), activating
      • Notes
      • Special tools and equipment
      • Requirements
      • Test procedure
      • Activating Evaporative Emission (EVAP) canister purge regulator valve -N80-
      • Activating Secondary Air Injection (AIR) solenoid valve -N112-
      • Activating Secondary Air Injection (AIR) pump relay -J299-
      • Activating Intake manifold change-over valve -N156-
      • Activating Leak Detection Pump (LDP) -V144-:
  • Readiness code
    • Function
    • Readiness code (function 15), displaying
      • Special tools and equipment
      • Test procedure
        • Notes
        • Explanation of 8 digit readiness code
    • Readiness code (function 15), generating
      • Special tools and equipment
      • Test conditions
      • Step 1: Check DTC memory
      • Step 2: Erase DTC memory
      • Step 3: Adaptation of throttle valve control module to ECM
      • Step 4:
      • Step 5: Oxygen sensor (O2S) aging diagnostic (cycle duration monitor)
      • Step 6: Three Way Catalytic Converter (TWC) diagnostic
      • Step 7: Secondary Air Injection (AIR) system diagnostic
      • Step 8: EVAP system and fuel tank leak detection
      • Step 9: Display readiness code
  • Read Measuring Value Block (scan tool function 08)
    • Safety precautions
    • Read Measuring Value Block, initiating
      • Special tools and equipment
      • Requirements
      • Test procedure
    • Read Measuring Value Block, evaluating