P0172

SAE VAG Description
P0172 16556 System Too Rich Bank 1

Fuel Injectors
- Fuel injectors, checking. Fuel Injectors, Checking
- Output Diagnostic Test Mode (DTM) (scan tool function 03). Output Diagnostic Test Mode (DTM) (Function 03)

Fuel Pump
- Fuel pressure regulator and residual pressure checking. Fuel Pressure, Regulator and Residual Fuel Pressure, Checking
- Fuel pump, checking. Fuel Pump, Checking

G108 - Heated Oxygen Sensor (HO2S) 2

- Oxygen Sensor (O2S) aging, bank 2, sensor 1, checking. Oxygen Sensor Aging Check

- Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC) checking. Oxygen Sensor and O2S Control Before Catalyst, Checking

G130 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)

- Oxygen Sensor (O2S) and Oxygen Sensor (O2S) control behind TWC checking. Oxygen Sensor and O2S Control Behind Catalyst, Checking

G131 - Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC)

- Oxygen Sensor (O2S) and oxygen sensor control behind TWC checking. Oxygen Sensor and O2S Control Behind Catalyst, Checking

G39 - Heated Oxygen Sensor (HO2S)

- Oxygen Sensor (O2S) aging bank 1 sensor 1 checking. Oxygen Sensor Aging Check
- Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC) checking. Oxygen Sensor and O2S Control Before Catalyst, Checking

N80 - Evaporative Emission (EVAP) Canister Purge Regulator Valve

- Evaporative Emission (EVAP) canister purge regulator valve checking. EVAP Canister Purge Regulator Valve, Checking

- Output Diagnostic Test Mode (DTM) (scan tool function 03). Output Diagnostic Test Mode (DTM) (Function 03)