P0174

SAE VAG Description
P0174 16558 System Too Lean Bank 2

Exhaust System
- Exhaust manifold, front exhaust pipe with Three Way Catalytic Converter (TWC) and attachments. Three Way Catalytic Converter (TWC), Checking
- Exhaust system components, removing and installing. Service and Repair
- Mufflers with mounts. Service and Repair
- Three Way Catalytic Converter (TWC), checking. Three Way Catalytic Converter (TWC), Checking

Fuel Injectors
- Fuel injectors, checking. Fuel Injectors, Checking
- Fuel rail with fuel injectors disassembling and assembling.

Fuel Supply System
- Fuel injectors, checking. Fuel Injectors, Checking
- Fuel pressure regulator and residual pressure checking. Fuel Pressure, Regulator and Residual Fuel Pressure, Checking
- Fuel Pump (FP) and sender for fuel gauge, component overview. Locations
- Fuel pump checking. Fuel Pump, Checking
- Fuel pump, removing and installing. Service and Repair
- Fuel rail with fuel injectors disassembling and assembling.
- Fuel tank with attachments, component overview. Locations
- Safety precautions when working on fuel supply. Service Precautions

Intake system
- Intake air system checking for leaks. Intake Air System, Checking For Leaks

Secondary Air Injection (AIR) system
- Secondary Air Injection (AIR) pump motor and relay, checking. Secondary Air Injection (Air) Pump Motor and Relay, Checking
- Secondary Air Injection (AIR) pump motor, checking. Secondary Air Injection (Air) Pump Motor V101, Checking
- Secondary Air Injection (AIR) system components, removing and installing. Secondary Air Injection (Air) Pump Motor V101, Checking
- Secondary Air Injection (AIR) valve, checking. Secondary Air Injection (Air) Valve, Checking
- Secondary Air Injection (AIR) Function. Description and Operation
- Secondary Air Injection (AIR) system, checking for proper seal. Combination Valve For Secondary Air Injection (Air), Checking Function and Proper Seal

Vacuum system
- Vacuum line layout. Diagrams

Note: Check exhaust system for leaks. Check vacuum lines for leaks.