Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSVOLKSWAGEN2011JETTA TDI, 4D SEDAN, AUTOMATIC DCTREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETUNE-UP2.0L - GENERIC SCAN TOOL - ENGINE CODE: CJAA (SEDAN)
2011 Volkswagen Jetta TDI, 4D Sedan, Automatic DCT
2.0L - Generic Scan Tool - Engine Code: CJAA (Sedan)
2011 Volkswagen Jetta TDI, 4D Sedan, Automatic DCTSECTION 2.0L - Generic Scan Tool - Engine Code: CJAA (Sedan)
- St Generic Scan Tool
- General Information
- Description And Operation
- Diagnosis And Testing
- Preliminary Check
- Readiness Code
- Diagnostic Modes 01 - 09
- 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 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 $31: EGR Control Loop
- Monitor-ID $81: Zero Fuel Calibration Monitor
- Monitor-ID $85: Boost Pressure Control Loop
- Monitor-ID $90: NOx Absorber
- 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
- Monitor-ID $B2: Particulate Matter Trap Efficiency
- 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 - Read Vehicle Information
- Diagnostic Mode 0A - Check Permanent DTC Memory
- DTC Tables
- Transmission DTC Tables
- Diagnostic Procedures
- Accelerator Pedal Position Sensor - G79- / Accelerator Pedal Position Sensor 2 - G185-, CHECKING
- Ambient Air Temperature Sensor Checking
- Automatic Glow Time Control Module -J179- AND GLOW PLUG, CHECKING
- Camshaft Position Sensor - G40-, CHECKING
- Can-Bus Instrument Cluster To Data Bus OBD Interface, Checking
- Can-Bus Terminal Resistance, Checking
- Catalytic Converter, Checking
- Charge Air Pressure Sensor - G31- / Intake Air Temperature Sensor - G42-, CHECKING
- Charge Pressure Actuator Position Sensor - G581-, CHECKING
- Cylinders 1, 2, 3, 4 Internal Pressure Sensors - G620, G621, G622, G623-, CHECKING
- Differential Pressure Sensor - G505-, CHECKING
- EGR Temperature Sensor - G98-, CHECKING
- EGR Vacuum Regulator Solenoid Valve - N18- AND EGR Potentiometer - G212-, CHECKING
- Engine Coolant Temperature Sensor - G62-, CHECKING
- Engine Coolant Temperature Sensor On Radiator Outlet - G83-, CHECKING
- Engine Speed Sensor - G28-, CHECKING
- Exhaust Door Control Unit - J883-, CHECKING
- Exhaust Gas Temperature Sensors 1, 2, 3, 4 -G235, G448, G495, G648-, CHECKING
- Exhaust Pressure Sensor 1 - G450-, CHECKING
- Fuel Injectors --, CHECKING
- Fuel Metering Valve -N290-, CHECKING
- Fuel Pressure Regulator Valve -N276-, CHECKING
- Fuel Pressure Sensor - G247-, CHECKING
- Fuel Pump 2 In-Line / Fuel Pump Relay 2, Checking
- Fuel Temperature Sensor -G81-, CHECKING
- Fuel Transfer Pump And Fuel Pump Relay, Checking
- Heated Oxygen Sensor -G39-, CHECKING
- Intake Flap Motor -V157- AND Intake Manifold Runner Position Sensor -G336-, CHECKING
- Mass Airflow Sensor -G70-, CHECKING
- Oxygen Sensor After Three Way Catalytic Converter -G130-, CHECKING
- Power Supply Relay, Checking
- Regeneration And Diesel Particulate Filter, Checking
- Throttle Valve Control Module -J338-, CHECKING
- Valve 2 For EGR -N213- AND Exhaust Gas Recirculation Position Sensor 2 -G466-, CHECKING
- Vehicle Speed Signal, Checking
- Voltage Supply, Checking
- Wastegate Bypass Regulator Valve -N75-, CHECKING
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.