Exhaust System: Locations
Engine Management System
Exhaust System
Select system or component ID below to navigate to a location view.
• 1.8L APH, AWV, AWP, BKF and BNU => [ 1.8L APH, AWV, AWP, BKF and BNU Exhaust System ]
• 1.9L TDI ALH and BEW => [ 1.9L TDI ALH and BEW Exhaust System ]
• 2.0L AEG, AVH, AZG and BEV => [ 2.0L AEG, AVH, AZG and BEV Exhaust System ]
• 2.5L BPS and BPR => [ 2.5L BPS and BPR Exhaust System ]
1.8L APH, AWV, AWP, BKF and BNU Exhaust System
Engines with 3 Oxygen Sensors
4 - Heated Oxygen Sensor (HO2S) -G39-
• In front exhaust pipe
• Engines with two oxygen sensor location
5 - 6 pin harness connector
• For Heated Oxygen Sensor (HO2S)-G39- and Oxygen Sensor (O2S) heater -Z19-
6 - 4 pin harness connector
• For Oxygen Sensor (O2S) in Three Way Catalytic Converter -G465- and Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter) heater -Z59-
• Located right of vehicle underside
7 - Heated Oxygen Sensor (HO2S) 2 -G108- or Oxygen Sensor (O2S (in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-
8 - 4 pin harness connector
• Located after catalytic converter
• For Oxygen Sensor (O2S) behind Three Way Catalytic Converter -G130- and Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter) heater -Z29-
9 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
• Located after the catalytic converter
• Engines with two oxygen sensor location
Engines with 2 Oxygen Sensors
4 - Heated Oxygen Sensor (HO2S) -G39-
• Located front of exhaust pipe
5 - 6 pin harness connector
• For Heated Oxygen Sensor (HO2S)-G39- and Oxygen Sensor (O2S) heater -Z19-
• Located right of vehicle underside
6 - 4 pin harness connector
• For Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)-G130- and Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter (TWC)) heater -Z29-
• Located right of vehicle underside
7 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
• Located in the catalytic converter
Secondary Air Injection System Overview
4 - Secondary Air Injection (AIR) Solenoid Valve -N112-
• Mounted on the cylinder head cover
7 - Secondary Air Injection (AIR) Pump Relay -J299-
13 - Secondary Air Injection (AIR) Pump Motor -V101-
1.9L TDI ALH and BEW Exhaust System
Oxygen Sensor - Engine code BEW shown
9 - Heated Oxygen Sensor (HO2S) -G39-
• Engine code BEW shown
Exhaust Gas Recirculation System Overview - Engine code
BEW shown
4 - Intake Manifold
6 - EGR Vacuum Regulator Solenoid Valve -N18-
2.0L AEG, AVH, AZG and BEV Exhaust System
Oxygen Sensors - Engine code AEG shown
1 - Combination valve
• Only on engines with Secondary Air Injection (AIR) system
8 - 4 pin harness connector
• For Heated Oxygen Sensor (HO2S)-G39- and Oxygen Sensor (O2S) heater -Z19-
9 - Heated Oxygen Sensor (HO2S) -G39-
10 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
11 - 4 pin harness connector
• For Oxygen Sensor behind Three Way Catalytic Converter -G130- and Oxygen Sensor 1 (behind Three Way Catalytic Converter) heater -Z29-
17 - Exhaust manifold
Secondary Air Injection System Overview - Engine code
AEG shown
1 - Connector
2 - Secondary Air Injection (AIR) Solenoid Valve -N112-
4 - Secondary Air Injection (AIR) Pump Relay -J299-
• Located in the relay and fuse protective housing in the engine compartment (in the cable guide next to the master brake cylinder)
8 - Secondary Air Injection (AIR) Pump Motor -V101-
2.5L BPS and BPR Exhaust System
Engine code BPS and BPR shown
3 - Exhaust Manifold
7 - Heated Oxygen Sensor (HO2S) -G39-
Engine code BPR shown
1 - Exhaust Manifold
3 - Connector
4 - Oxygen Sensor (O2S (in Center Three Way Catalytic Converter (TWC), Bank 1 -G465-
9 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
• For engine code BPS
10 - Connector
Engine code BPS shown
4 - Front Exhaust Pipe with Catalytic Converter
9 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130-
10 - Connector
Secondary Air Injection System
3 - Connector
• For the Secondary Air Injection (AIR) solenoid valve
4 - Secondary Air Injection (AIR) Solenoid Valve -N112-
11 - Secondary Air Injection (AIR) Pump Motor -V101-
12 - Bracket
• For the Secondary Air Injection (AIR) Pump Motor -V101-
• For the double signal horn.