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 MANUALSAUDI2012A3 (8PA) L4-2.0L TURBO (CCTA)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSLOCATIONS2.0L TDI CBEA
2012 Audi A3 (8PA) L4-2.0L Turbo (CCTA)
2.0L TDI CBEA
2012 Audi A3 (8PA) L4-2.0L Turbo (CCTA)SECTION 2.0L TDI CBEA
Component Locations: Engine Management System
2.0L TDI CBEA
Components A - Fare not shown in the overview
A - Positive Crankcase Ventilation (PCV) Heating Element -N79- => [ Positive Crankcase Ventilation (PCV) Heating Element ] See Image Below.
B - Brake Light Switch -F- and Brake Pedal Switch -F47- /Brake Pedal Switch -F63- => [ Brake Lamp Switch -F- and Brake Pedal Switch -F47--1- ] See Image Below.
C - Clutch Position Sensor -G476- => [ ] See Image Below.
• Only for vehicles with manual transmission
D - Oil Level Thermal Sensor -G266-
• Located at the bottom of the lower oil pan
E - Oil Pressure Switch -F1-
• Located at the oil filter bracket
F - Automatic Glow Time Control Module -J179-
• Located at the relay carrier under the engine compartment E-box.
1 - Differential Pressure Sensor -G505- => [ Pressure Sensor ] See Image Below.
2 - Camshaft Position (CMP) Sensor -G40- => [ ] See Image Below.
3 - Heated Oxygen Sensor (HO2S) -G39- with Oxygen Sensor (O2S) Heater -Z19- => [ 2.0L TDI CBEA Exhaust System ] Locations
4 - Engine Control Module
5 - Injection Units - => [ Fuel Injectors ] See Image Below.
6 - Charge Pressure Actuator Position Sensor -G581- => [ Components on the Engine ] See Image Below.
7 - Pressure Retention Valve
8 - Fuel Pressure Regulator Valve -N276- => [ Component Locations Overview ] See Image Below.
9 - Wastegate Bypass Regulator Valve -N75- => [ Installed Locations and Connectors ] See Image Below.
10 - Electrical Harness Connector
• For Exhaust Gas Temperature (EGT) Sensor 4 -G648-, For Exhaust Gas Temperature (EGT) Sensor 1 -G235- and For Heated Oxygen Sensor (HO) -G39-
11 - Mass Air Flow (MAF) Sensor -G70- => [ Mass Air Flow Sensor ] See Image Below.
12 - Engine Coolant Temperature (ECT) Sensor -G62- => [ Engine Coolant Temperature (ECT) Sensor ] See Image Below.
13 - Engine Speed (RPM) Sensor -G28- => [ Engine Speed (RPM) Sensor ] See Image Below.
2.0L TDI CBEA continued
14 - Intake Flap Motor -V157- with Intake Manifold Runner Position Sensor -G336- => [ Component Locations Overview ] See Image Below.
• Component located on the intake manifold
15 - Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345- => [ Component Locations Overview ] See Image Below.
16 - Exhaust Gas Recirculation (EGR) Cooler Pump -V400- => [ Exhaust Gas Recirculation Cooler Pump ] See Image Below.
17 - Throttle Valve Control Module -J338- with Throttle Position (TP) Sensor -G69- => [ Component Locations Overview ] See Image Below.
• Component located on the intake manifold
18 - Charge Air Pressure Sensor -G31- with Intake Air Temperature (IAT) Sensor -G42- => [ Charge Air Pressure Sensor ] See Image Below.
19 - Glow Plugs - Glow Plug 1 -Q10- , Glow Plug 2 -Q11- , Glow Plug 3 -Q12- and Glow Plug 4 -Q13-
• Glow plugs with combustion chamber pressure sensors are integrated with - Cylinder 1 Internal Pressure Sensor -G620- , Cylinder 2 Internal Pressure Sensor -G621- , Cylinder 3 Internal Pressure Sensor -G622- and Cylinder 4 Internal Pressure Sensor -G623-
20 - Fuel Temperature Sensor -G81- => [ Component Locations Overview ] See Image Below.
21 - Exhaust Gas Recirculation (EGR) Motor -V338- with EGR Potentiometer -G212- => [ Component Locations Overview ] See Image Below.
• Exhaust system engine code CBEA TDI component location => [ 2.0L TDI CBEA Exhaust System ] Locations
22 - Fuel Return Line Connection to the Fuel Filter
23 - Fuel Supply Line Connection (High Pressure Line) to the Fuel Rail (High Pressure Reservoir
24 - Fuel Metering Valve -N290- => [ Component Locations Overview ] See Image Below.
25 - Fuel Pressure Sensor -G247- => [ Component Locations Overview ] See Image Below.
26 - Engine Coolant Temperature (ECT) Sensor (on Radiator) -G83- => [ Cooling Fans and Cooling Pump ] Locations
27 - Auxiliary Fuel Pump -V393-
28 - Fuel Filter
Pressure Sensor
2 - Differential Pressure Sensor -G505-
Camshaft Position (CMP) Sensor -G40-
Arrow - Camshaft Position (CMP) Sensor -G40-
Fuel Injectors
- - Fuel Injectors
- Cylinder 1 Fuel Injector -N30-
- Cylinder 2 Fuel Injector -N31-
- Cylinder 3 Fuel Injector -N32-
- Cylinder 4 Fuel Injector -N33-
- Fuel Pressure Regulator Valve -N276-
Components on the Engine
1 - Differential Pressure Sensor -G505-
2 - Charge Pressure Actuator Position Sensor -G581-
3 - Fuel Pressure Sensor -G247-
4 - Fuel Injectors
Component Locations Overview
1 - Fuel Pressure Sensor -G247-
2 - Fuel Pressure Regulator Valve -N276-
3 - Intake Flap Motor -V157- with Intake Manifold Runner Position Sensor -G336-
4 - Exhaust Gas Recirculation (EGR) Cooler Switch-Over Valve -N345- (if applicable)
5 - Throttle Valve Control Module -J338- with Throttle Position (TP) Sensor -G69-
6 - Exhaust Gas Recirculation (EGR) Motor -V338- with EGR Potentiometer -G212-
7 - Fuel Temperature Sensor -G81-
8 - Fuel Metering Valve -N290-
Installed Locations and Connectors
1 - Wastegate Bypass Regulator Valve -N75- connector
2 - Exhaust Gas Temperature (EGT) Sensor 2 -G448-
3 - Exhaust Gas Temperature (EGT) Sensor 1 -G235- connector
4 - Oxygen sensor -G39- connector
5 - Exhaust gas temperature sensor 3 -G495- connector
Mass Air Flow Sensor
1 - Mass Air Flow (MAF) Sensor -G70-
Engine Coolant Temperature (ECT)
Sensor
2 - Engine Coolant Temperature (ECT) Sensor -G62-
Engine Speed (RPM) Sensor
Arrow - Engine Speed (RPM) Sensor -G28-
Exhaust Gas Recirculation Cooler
Pump
- - Exhaust Gas Recirculation (EGR) Cooler Pump -V400-
Charge Air Pressure Sensor
1 - Charge Air Pressure Sensor -G31- with Intake Air Temperature (IAT) Sensor -G42-
Positive Crankcase Ventilation
(PCV) Heating Element
3 - Positive Crankcase Ventilation (PCV) Heating Element -N79-
Brake Lamp Switch -F- and Brake
Pedal Switch -F47--1-
1 - Brake Light Switch -F- and Brake Pedal Switch -F47- /Brake Pedal Switch -F63-
Clutch Position Sensor -G476-
- - Clutch Position Sensor -G476- integrated with Clutch Pedal Starter Interlock Switch -F194- and Clutch Pedal Switch -F36-
RENDER: 1.0x
NO RELATED
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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.