Fuel and air ratios

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DIAGNOSTIC TROUBLE CODE (DTC) - P2101-P2138

SAE - DTC	VAG Code	DTC text	Corrective action
P2101	18533	Throttle Actuator Control Motor Circuit Range/Performance	Check Throttle Valve Control Module -J338-, see THROTTLE VALVE CONTROL MODULE, CHECKING
P2106	18538	Throttle Actuator Control System, Forced Limited Power
P2122	18554	Throttle/Pedal Position Sensor/Switch "D" Circuit Low Input	Check Throttle Position (TP) Sensor -G79- and Sender -2- for accelerator pedal position -G185-, see 20 FUEL SUPPLY
P2123	18555	Throttle/Pedal Position Sensor/Switch "D" Circuit High Input
P2127	18559	Throttle/Pedal Position Sensor/Switch "E" Circuit Low Input
P2128	18560	Throttle/Pedal Position Sensor/Switch "E" Circuit High Input
P2138	18570	Throttle/Pedal Position Sensor/Switch "D" / "E" Voltage Correlation

DIAGNOSTIC TROUBLE CODE (DTC) - P2181

SAE - DTC	VAG Code	DTC text	Corrective action
P2181	18613	Cooling System Performance	Check Engine Coolant Temperature (ECT) Sensor -G62-, see ENGINE COOLANT TEMPERATURE (ECT) SENSOR, CHECKING Check coolant regulator: See 19 ENGINE - COOLING SYSTEM

DIAGNOSTIC TROUBLE CODE (DTC) - P2243-P2251

SAE - DTC	VAG Code	DTC text	Corrective action
P2243	18675	O2 Sensor Reference Voltage Circuit/Open, 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)
P2251	18683	O2 Sensor Negative Current Control Circuit/Open, Bank 1 Sensor 1