Section 121 (Generic Scan Tool [DJXA])
WARNING: This page is about a different car, the 2020 Volkswagen Jetta and 2019 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.
- St Generic Scan Tool
- General Information
- Description And Operation
- Notes
- On Board Diagnostic Systems
- Evaporative Emission System
- Electronic Throttle Control (Etc) System
- Electronic Power Control (EPC) Warning Lamp
- Engine Control Module (ECM)
- Malfunction Indicator Lamp (Mil)
- Controller Area Network (Can)
- Fuel Supply
- Ignition And Timing
- Variable Valve Timing
- Exhaust-Gas RECIRCULATION (EGR) System
- Secondary Air Injection
- Exhaust Systems
- Diagnosis And Testing
- Notes
- Preliminary Check
- Readiness Code
- Diagnostic Modes 01 - 0A
- Notes
- Diagnostic Mode 01 - Read Current System Data
- Diagnostic Mode 02 - Read Operating Conditions
- Diagnostic Mode 03 - Read DTC Memory
- Diagnostic Mode 04 - Erase DTC Memory
- Diagnostic Mode 05 - Read Oxygen Sensor Monitoring Test Results
- Diagnostic Mode 06 - Read Test Results For Specific Diagnostic Functions
- Notes
- Monitor-ID $01: Oxygen Sensor Monitor Bank 1 - Sensor 1
- Monitor-ID $02: Oxygen Sensor Monitor Bank 1 - Sensor 2
- Monitor-ID $21: Catalytic Converter Monitoring
- Monitor-ID $35: Camshaft Adjustment / VVT Bank 1
- Monitor-ID $3B: Fuel Tank EVAP System Integrity / Leak Test (Small Leak) (0.040" / 1.0 mm)
- Monitor-ID $3C: Fuel Tank EVAP System Integrity/Leak Test (Very Small Leak) (0.020" / 0.5 mm)
- Monitor-ID $3D: EVAP Purge Valve Function Check
- Monitor-ID $41: Oxygen Sensor Heater Monitor Bank 1 - Sensor 1
- Monitor-ID $42: Oxygen Sensor Heater Monitor Bank 1 - Sensor 2
- Monitor-ID $81: Fuel System Cylinder Data
- Monitor-ID $A2: Mis-Fire Cylinder 1 Data
- Monitor-ID $A3: Mis-Fire Cylinder 2 Data
- Monitor-ID $A4: Mis-Fire Cylinder 3 Data
- Monitor-ID $A5: Mis-Fire Cylinder 4 Data
- Diagnostic Mode 07 - Read Faults Detected During The Current Or Last Driving Cycle
- Diagnostic Mode 08 - Request Control Of On-Board System, Test Or Component
- Diagnostic Mode 09 - Request Vehicle Information
- Diagnostic Mode 0A - Request Emission-Related Diagnostic Trouble Codes With Permanent Status