Fuel and air ratios

WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 2005 Volkswagen Jetta, 2004 Volkswagen Jetta, 2003 Volkswagen Jetta, 2003 Volkswagen Golf, and 2002 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC TROUBLE CODE (DTC) - P0101-P0113

SAE - DTC	VAG Code	DTC text	Corrective action
P0101	16485	Mass or Volume Air Flow Circuit Range/Performance	Check Mass Air Flow (MAF) Sensor -G70-, see MASS AIR FLOW (MAF) SENSOR, CHECKING Check intake air system for leaks (false air), see CHECKING INTAKE SYSTEM FOR LEAKS (UNMETERED AIR)
P0102	16486	Mass or Volume Air Flow Circuit Low Input
P0103	16487	Mass or Volume Air Flow Circuit High Input
P0112	16496	Intake Air Temperature Sensor 1 Circuit Low	Check Intake Air Temperature (IAT) Sensor -G42-, see INTAKE AIR TEMPERATURE (IAT) SENSOR, CHECKING
P0113	16497	Intake Air Temperature Sensor 1 Circuit High

DIAGNOSTIC TROUBLE CODE (DTC) - P0116-P0123)

SAE - DTC	VAG Code	DTC text	Corrective action
P0116	16500	Engine Coolant Temperature Circuit Range/Performance	Check Engine Coolant Temperature (ECT) Sensor -G62-, see ENGINE COOLANT TEMPERATURE (ECT) SENSOR, CHECKING Check coolant regulator: See 19 ENGINE - COOLING SYSTEM
P0117	16501	Engine Coolant Temperature Circuit Low
P0118	16502	Engine Coolant Temperature Circuit High
P0120	16504	Throttle/Pedal Position Sensor/Switch "A" Circuit	Check Throttle Valve Control Module -J338-, see THROTTLE VALVE CONTROL MODULE, CHECKING
P0121	16505	Throttle/Pedal Position Sensor/Switch "A" Circuit Range/Performance
P0122	16506	Throttle/Pedal Position Sensor/Switch "A" Circuit Low
P0123	16507	Throttle/Pedal Position Sensor/Switch "A" Circuit High

DIAGNOSTIC TROUBLE CODE (DTC) - P0130-P0135

SAE - DTC	VAG Code	DTC text	Corrective action
P0130	16514	O2 Sensor Circuit, Bank 1 Sensor 1	Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC), see OXYGEN SENSOR (O2S) AND OXYGEN SENSOR CONTROL BEFORE THREE WAY CATALYTIC CONVERTER (TWC)
P0131	16515	O2 Sensor Circuit Low Voltage, Bank 1 Sensor 1
P0132	16516	O2 Sensor Circuit High Voltage, Bank 1 Sensor 1
P0133	16517	O2 Sensor Circuit Slow Response, Bank 1 Sensor 1
P0134	16518	O2 Sensor Circuit No Activity Detected, Bank 1 Sensor 1
P0135	16519	O2 Sensor Heater Circuit, Bank 1 Sensor 1	Check oxygen sensor heater for Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC), see OXYGEN SENSOR HEATER FOR OXYGEN SENSOR BEFORE THREE WAY CATALYTIC CONVERTER (TWC)

DIAGNOSTIC TROUBLE CODE (DTC) - P0136-P0141

SAE - DTC	VAG Code	DTC text	Corrective action
P0136	16520	O2 Sensor Circuit, Bank 1 Sensor 2	Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC), see OXYGEN SENSOR AND OXYGEN SENSOR CONTROL BEHIND THREE WAY CATALYTIC CONVERTER (TWC), CHECKING
P0137	16521	O2 Sensor Circuit Low Voltage, Bank 1 Sensor 2
P0138	16522	O2 Sensor Circuit High Voltage, Bank 1 Sensor 2
P0139	16523	O2 Sensor Circuit Slow Response, Bank 1 Sensor 2
P0140	16524	O2 Sensor Circuit No Activity Detected, Bank 1 Sensor 2
P0141	16525	O2 Sensor Heater Circuit, Bank 1 Sensor 2	Check oxygen sensor heater for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC), see OXYGEN SENSOR HEATER FOR OXYGEN SENSOR BEHIND THREE WAY CATALYTIC CONVERTER (TWC)

DIAGNOSTIC TROUBLE CODE (DTC) - P0170-P0171

SAE - DTC	VAG Code	DTC text	Corrective action
P0170	16554	Fuel Trim, Bank 1	Check fuel pressure regulator and residual pressure, see FUEL PRESSURE REGULATOR AND RESIDUAL PRESSURE, CHECKING Check fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-), see CHECK FUEL INJECTORS Check intake air system for leaks (false air), see CHECKING INTAKE SYSTEM FOR LEAKS (UNMETERED AIR) Check Fuel Pump (FP) -G6-, see 20 FUEL SUPPLY Check exhaust system for proper seal, see EXHAUST SYSTEM COMPONENTS, REMOVING AND INSTALLING Check Secondary Air Injection (AIR) system for proper seal, see SECONDARY AIR INJECTION SYSTEM Check vacuum lines for proper seal
P0171	16555	System Too Lean, Bank 1	Check fuel pressure regulator and residual pressure, see FUEL PRESSURE REGULATOR AND RESIDUAL PRESSURE, CHECKING Check fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-), see CHECK FUEL INJECTORS Check intake air system for leaks (false air), see CHECKING INTAKE SYSTEM FOR LEAKS (UNMETERED AIR) Check Fuel Pump (FP) -G6-, see 20 FUEL SUPPLY Check exhaust system for proper seal, see EXHAUST SYSTEM COMPONENTS, REMOVING AND INSTALLING Check Secondary Air Injection (AIR) system for proper seal, see SECONDARY AIR INJECTION SYSTEM Check vacuum lines for proper seal

DIAGNOSTIC TROUBLE CODE (DTC) - P0172

SAE - DTC	VAG Code	DTC text	Corrective action
P0172	16556	System Too Rich, Bank 1	Check fuel pressure regulator and residual pressure, see FUEL PRESSURE REGULATOR AND RESIDUAL PRESSURE, CHECKING Check fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-), see CHECK FUEL INJECTORS Check Oxygen Sensor (O2S) and oxygen sensor control before Three Way Catalytic Converter (TWC), see OXYGEN SENSOR (O2S) AND OXYGEN SENSOR CONTROL BEFORE THREE WAY CATALYTIC CONVERTER (TWC) Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC), see OXYGEN SENSOR AND OXYGEN SENSOR CONTROL BEHIND THREE WAY CATALYTIC CONVERTER (TWC), CHECKING Check Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, see 20 FUEL SUPPLY

DIAGNOSTIC TROUBLE CODE (DTC) - P0201-P0223

SAE - DTC	VAG Code	DTC text	Corrective action
P0201	16585	Injector Circuit/Open - Cylinder 1	Check fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector -N33-), see CHECK FUEL INJECTORS
P0202	16586	Injector Circuit/Open - Cylinder 2
P0203	16587	Injector Circuit/Open - Cylinder 3
P0204	16588	Injector Circuit/Open - Cylinder 4
P0221	16605	Throttle/Pedal Position Sensor/Switch "B" Circuit Range/Performance	Check Throttle Valve Control Module -J338-, see THROTTLE VALVE CONTROL MODULE, CHECKING
P0222	16606	Throttle/Pedal Position Sensor/Switch "B" Circuit Low
P0223	16607	Throttle/Pedal Position Sensor/Switch "B" Circuit High

DIAGNOSTIC TROUBLE CODE (DTC) - P0226-P0230

SAE - DTC	VAG Code	DTC text	Corrective action
P0226	16610	Throttle/Pedal Position Sensor/Switch "C" Circuit Range/Performance	Check Throttle Position (TP) Sensor -G79- and Sender -2- for accelerator pedal position -G185-, see 20 FUEL SUPPLY
P0227	16611	Throttle/Pedal Position Sensor/Switch "C" Circuit Low
P0228	16612	Throttle/Pedal Position Sensor/Switch "C" Circuit High
P0230	16614	Fuel Pump Primary Circuit	Check activation of Fuel Pump (FP) Relay -J17- according to wiring diagram.

DIAGNOSTIC TROUBLE CODE (DTC) - P0261-P0271

SAE - DTC	VAG Code	DTC text	Corrective action
P0261	16645	Cylinder 1 Injector Circuit Low	Check fuel injectors (Cylinder 1 Fuel Injector -N30- to Cylinder 4 Fuel Injector - N33-), see CHECK FUEL INJECTORS
P0262	16646	Cylinder 1 Injector Circuit High
P0264	16648	Cylinder 2 Injector Circuit Low
P0265	16649	Cylinder 2 Injector Circuit High
P0267	16651	Cylinder 3 Injector Circuit Low
P0268	16652	Cylinder 3 Injector Circuit High
P0270	16654	Cylinder 4 Injector Circuit Low
P0271	16655	Cylinder 4 Injector Circuit High