Diagnostic Trouble Codes (DTC): P0011 to P1228, VAG 16395 to 17636

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

DTC code		DTC text	Corrective action
SAE	V.A.G
P0011	16395	"A" Camshaft Position - Timing Over-Advanced or System Performance Bank 1	Refer to 15 - ENGINE - CYLINDER HEAD, VALVETRAIN
P0012	16396	"A" Camshaft Position - Timing Over-Retarded Bank 1	Refer to 15 - ENGINE - CYLINDER HEAD, VALVETRAIN
P0101	16485	Mass or Volume Air Flow Circuit Range/Performance	Check Mass Air Flow (MAF) sensor. Refer to Fuel injectors, checking Check throttle valve for soiling. Refer to Throttle valve, checking for soiling Check hose setup of crankcase ventilation for secure seating and for proper seal
P0102	16486	Mass or Volume Air Flow Circuit Low Input
P0103	16487	Mass or Volume Air Flow Circuit High Input
P0106	16490	Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance 1)	Refer to 21 - TURBOCHARGER, G-CHARGER

1) The intake manifold pressure is determined by the Charge Air Pressure Sensor -G31- (in place of displayed -G71-), the air pressure is determined by altitude sensor -F96- (in ECM).

DTC code		DTC text	Corrective action
SAE	V.A.G
P0112	16496	Intake Air Temperature Sensor 1 Circuit Low	Check Intake Air Temperature (IAT) Sensor -G42-. Refer to Intake Air Temperature (IAT) sensor -G42-, checking .
P0113	16497	Intake Air Temperature Sensor 1 Circuit High
P0116	16500	Engine Coolant Temperature Circuit Range/Performance	Check Engine Coolant Temperature (ECT) Sensor -G42-. Refer to Engine Coolant Temperature (ECT) sensor -G62-, checking Check thermostat operation. Refer to 19 - ENGINE - COOLING SYSTEM
P0117	16501	Engine Coolant Temperature Circuit Low
P0118	16502	Engine Coolant Temperature Circuit High
P0130	16514	O2 Sensor Circuit Bank 1 Sensor 1	Check Oxygen Sensor control. Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before catalytic converter, checking
P0133	16517	O2 Sensor Circuit Slow Response Bank 1 Sensor 1

DTC code		DTC text	Corrective action
SAE	V.A.G
P0136	16520	O2 Sensor Circuit Bank 1 Sensor 2	Check Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before 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
P0230	16614	Fuel Pump Primary Circuit	Check Fuel Pump (FP) Relay -J17-. Refer to Fuel Pump (FP) relay -J17- and relay activation, checking
P0234	16618	Turbo/Super Charger Overboost Condition	Refer to 21 - TURBOCHARGER, G-CHARGER
P0236	16620	Turbo/Super Charger Boost Sensor "A" Circuit Range/Performance
P0237	16621	Turbo/Super Charger Boost Sensor "A" Circuit Low
P0238	16622	Turbo/Super Charger Boost Sensor "A" Circuit High
P0299	16683	Turbo/Super Charger Underboost

DTC code		DTC text	Corrective action
SAE	V.A.G
P0300	16684	Random/Multiple Cylinder Misfire Detected	Test misfire recognition. Refer to Misfire recognition, checking Refuel vehicle Check hose setup of crankcase ventilation for secure seating and for proper seal Check injectors. Refer to Fuel injectors, checking Check fuel pressure. Refer to System pressure, fuel pressure regulator and residual pressure, checking . Test spark plugs and ignition wiring Check ignition coils with power output stages. Refer to Ignition coils with power output stages, checking Check secure fit and leak-tightness of crankcase breather hose connections
P0301	16685	Cylinder 1 Misfire Detected
P0302	16686	Cylinder 2 Misfire Detected
P0303	16687	Cylinder 3 Misfire Detected
P0304	16688	Cylinder 4 Misfire Detected
P0321	16705	Ignition/Distributor Engine Speed Input Circuit Range/Performance	Check Engine Speed (RPM) Sensor -G28-. Refer to Engine speed (RPM) sensor -G28-, checking
P0322	16706	Ignition/Distributor Engine Speed Input Circuit No Signal

DTC code		DTC text	Corrective action
SAE	V.A.G
P0327	16711	Knock Sensor 1 Circuit Low Bank 1 or Single Sensor	Check KS -G61-. Refer to Knock sensors, checking
P0328	16712	Knock Sensor 1 Circuit High Bank 1 or Single Sensor
P0332	16716	Knock Sensor 2 Circuit Low Bank 2
P0333	16717	Knock Sensor 2 Circuit High Bank 2
P0341	16725	Camshaft Position Sensor "A" Circuit Range/Performance Bank 1 or Single Sensor	Check Camshaft Position (CMP) Sensor -G40-. Refer to Camshaft Position (CMP) sensor -G40-, checking
P0342	16726	Camshaft Position Sensor "A" Circuit Low Bank 1 or Single Sensor
P0343	16727	Camshaft Position Sensor "A" Circuit High Bank 1 or Single Sensor
P0411	16795	Secondary Air Injection System Incorrect Flow Detected	Check Secondary Air Injection (AIR) system. Refer to Intake air system for leaks (unmetered air), checking . Check Wastegate Bypass Regulator Valve -N75-: Refer to 21 - TURBOCHARGER, G-CHARGER

DTC code		DTC text	Corrective action
SAE	V.A.G
P0420	16804	Catalyst System Efficiency Below Threshold Bank 1	Generate readiness code. Refer to Readiness code, generating . If same malfunction is indicated again, replace catalytic converter.
P0441	16825	Evaporative Emission System Incorrect Purge Flow	Check Evaporative Emission (EVAP) canister purge regulator valve -1-. Refer to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, checking
P0442	16826	Evaporative Emission System Leak Detected (small leak)	Check fuel supply and tank ventilation system for leaks. Refer to 20 - FUEL SUPPLY SYSTEM
P0455	16839	Evaporative Emission System Leak Detected (large leak)
P0456	16840	Evaporative Emission System Leak Detected (very small leak)
P0501	16885	Vehicle Speed Sensor "A" Range/Performance	Check CAN-Bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P0506	16890	Idle Air Control System RPM Lower Than Expected	Check throttle valve control module. Refer to Throttle Valve Control Module -J338-, checking Perform adaptation of throttle valve control module. Refer to Throttle Valve Control Module -J338-, adapting Check for unmetered air Check hose setup of crankcase ventilation for secure seating and for proper seal Check hose set-up (Secondary Air Injection (AIR) system and crankcase ventilation); check intake system for leaks (false air). Refer to Intake air system for leaks (unmetered air), checking
P0507	16891	Idle Air Control System RPM Higher Than Expected

DTC code		DTC text	Corrective action
SAE	V.A.G
P0420	16804	Catalyst System Efficiency Below Threshold Bank 1	Generate readiness code. Refer to Readiness code, generating . If same malfunction is displayed again, replace Three Way Catalytic Converter (TWC).
P0441	16825	Evaporative Emission System Incorrect Purge Flow	Check Activating Evaporative Emission (EVAP) Canister Purge Regulator -N80-. Refer to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, checking
P0501	16885	Vehicle Speed Sensor "A" Range/Performance	Check vehicle speed signal . Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
P0506	16890	Idle Air Control System RPM Lower Than Expected	Perform adaptation of Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, adapting Check for leaks (unmetered air) in intake air system. Refer to Intake air system for leaks (unmetered air), checking Check hose setup of crankcase ventilation for secure seating and for proper seal Check Secondary Air Injection (AIR) system. Refer to Intake air system for leaks (unmetered air), checking .
P0507	16891	Idle Air Control System RPM Higher Than Expected
P0560	16944	System Voltage	Check voltage supply. Refer to Motronic Engine Control Module (ECM) power supply, checking
P0562	16946	System Voltage Low
P0563	16947	System Voltage High

DTC code		DTC text	Corrective action
SAE	V.A.G
P0571	16955	Brake Switch "A" Circuit 2)	Check Brake Light Switch -F- and Brake Vacuum Vent Valve Switch -F47-. Refer to Brake Light Switch -F- and Brake Pedal Switch -F47-
P0601	16985	Internal Control Module Memory Check Sum Error	Replace Engine Control Module (ECM). Refer to Removing Engine Control Module
P0604	16988	Internal Control Module Random Access Memory (RAM) Error
P0605	16989	Internal Control Module Read Only Memory (ROM) Error
P0685	17069	ECM/PCM Power Relay Control Circuit/Open	Test Motronic ECM Power Supply Relay -J271-. Refer to Motronic ECM Power supply relay -J271-, checking
P0686	17070	ECM/PCM Power Relay Control Circuit Low
P0687	17071	ECM/PCM Power Relay Control Circuit High
P0688	17072	ECM/PCM Power Relay Sense Circuit/Open
P1102	17510	HO2S Heater Control Circuit (Bank 1 Sensor 1) High	Check Oxygen Sensor (O2S) heating before Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way Catalytic Converter (TWC), checking
P1103	17511	Bank1-probe1, heating circuit output too low

2) The brake pedal switch -F47- is monitored in addition to the brake light switch -F-.

DTC code		DTC text	Corrective action
SAE	V.A.G
P1105	17513	HO2S Heater Control Circuit (Bank 1 Sensor 2) High	Check Oxygen Sensor (O2S) heating after Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) heater 1 -Z29- behind Three Way Catalytic Converter (TWC), checking
P1111	17519	Oxygen sensor control (Bank 1) System too lean	Check oxygen sensor adaptation values and control Check hose setup of crankcase ventilation for secure seating and for proper seal Check Oxygen Sensor (O2S) control before Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way Catalytic Converter (TWC), checking
P1112	17520	Oxygen sensor control (Bank 1) System too rich
P1114	17522	Bank 1, sensor 2 Internal resistance too large	Check Oxygen Sensor (O2S) heating after Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) heater 1 -Z29- behind Three Way Catalytic Converter (TWC), checking Replace Oxygen Sensor (O2S) if resistance incorrect. Refer to Oxygen Sensor (O2S), removing and installing
P1115	17523	HO2S Heater Control Circuit (Bank 1 Sensor 1) Low	Check Oxygen Sensor (O2S) heating before Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way Catalytic Converter (TWC), checking
P1116	17524	HO2S Heater Control Circuit (Bank 1 Sensor 1)

DTC code		DTC text	Corrective action
SAE	V.A.G
P1117	17525	HO2S Heater Control Circuit (Bank 1 Sensor 2) Low	Check Oxygen Sensor (O2S) heating after Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) heater 1 -Z29- behind Three Way Catalytic Converter (TWC), checking
P1118	17526	HO2S Heater Control Circuit (Bank 1 Sensor 2)
P1127	17535	Bank1, mixture adaption (mult.) system too rich	Check hose set-up (Secondary Air Injection (AIR) system and crankcase ventilation) Road test vehicle (fuel in oil) Check fuel system pressure. Refer to System pressure, fuel pressure regulator and residual pressure, checking Check Mass Air Flow (MAF) sensor -G70-. Refer to Mass Air Flow (MAF) sensor -G70-, checking Check Secondary Air Injection (AIR) system. Refer to Intake air system for leaks (unmetered air), checking .
P1128	17536	Bank1, mixture adaption (mult.) system too lean	Check exhaust system for proper seal Check pressure regulation valve of crankshaft housing ventilation Test Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way Catalytic Converter (TWC), checking Test Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) heater 1 -Z29- behind Three Way Catalytic Converter (TWC), checking Check fuel injectors. Refer to Fuel injectors, checking

NOTE: mult. = multiplicative means that the DTC occurs throughout the entire speed range and load range.

DTC code		DTC text	Corrective action
SAE	V.A.G
P1136	17544	Bank1, mixture adaption (add.) system too lean	Check hose set-up (Secondary Air Injection (AIR) system and crankcase ventilation) Perform road test (fuel in oil) Check fuel system pressure. Refer to System pressure, fuel pressure regulator and residual pressure, checking Check Mass Air Flow (MAF) sensor -G70-. Refer to Mass Air Flow (MAF) sensor -G70-, checking Check for leaks (unmetered air) in intake air system. Refer to Intake air system for leaks (unmetered air), checking
P1137	17545	Bank1, mixture adaption (add.) system too rich	Test Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before Three Way Catalytic Converter (TWC), checking Test Oxygen Sensor (O2S) after Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) heater 1 -Z29- behind Three Way Catalytic Converter (TWC), checking Check fuel injectors. Refer to Fuel injectors, checking Check exhaust system for proper seal Check pressure regulation valve of crankshaft housing ventilation Check Evaporative Emission (EVAP) Canister Purge Regulator -N80-. Refer to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, checking

DTC code		DTC text	Corrective action
SAE	V.A.G
P1147	17555	Oxygen sensor control, Bank 2 System too lean	Check oxygen sensor adaptation values and control Check hose setup of crankcase ventilation for secure seating and for proper seal
P1149	17557	Oxygen sensor control, Bank 1 Unplausible control value	Check Oxygen Sensor (O2S) learned values and Oxygen Sensor control. Refer to Oxygen Sensor (O2S) and Oxygen Sensor control before catalytic converter, checking Check fuel system pressure. Refer to System pressure, fuel pressure regulator and residual pressure, checking Check for leaks (unmetered air) in intake air system. Refer to Intake air system for leaks (unmetered air), checking Check hose setup of crankcase ventilation for secure seating and for proper seal
P1150	17558	Oxygen sensor control, Bank 2 Unplausible control value

DTC code		DTC text	Corrective action
SAE	V.A.G
P1171	17579	Angle sender 2 for throttle valve drive -G188- implausible signal	Test Angle sensor -2- for throttle drive -G188-. Refer to Angle sensors -1- and -2- for throttle drive -G187- and -G188-, checking
P1172	17580	Angle sender 2 for throttle valve drive -G188- signal too low
P1173	17581	Angle sender 2 for throttle valve drive -G188- signal too high
P1176	17584	Bank1, Lambda correction downstream of catalyst control limit reached	Check Oxygen Sensor aging of Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) before Three Way Catalytic Converter (TWC), checking Check Oxygen Sensor (O2S) and Oxygen Sensor control after Three Way Catalytic Converter (TWC). Refer to Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC), checking
P1201	17609	Injector Circuit/Open Cylinder 1	Check fuel injectors. Refer to Fuel injectors, checking
P1202	17610	Injector Circuit/Open Cylinder 2
P1203	17611	Injector Circuit/Open Cylinder 3
P1204	17612	Injector Circuit/Open Cylinder 4

NOTE: add. = additive means that DTC only has effect during idling

DTC code		DTC text	Corrective action
SAE	V.A.G
P1213	17621	Cylinder 1 Injector Circuit High	Check fuel injectors. Refer to Fuel injectors, checking
P1214	17622	Cylinder 2 Injector Circuit High
P1215	17623	Cylinder 3 Injector Circuit High
P1216	17624	Cylinder 4 Injector Circuit High
P1225	17633	Cylinder 1 Injector Circuit Low
P1226	17634	Cylinder 2 Injector Circuit Low
P1227	17635	Cylinder 3 Injector Circuit Low
P1228	17636	Cylinder 4 Injector Circuit Low