Diagnostic Trouble Codes (DTC): P1237 to P3081, VAG 17645 to 18339

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
P1237	17645	Cylinder 1 injector -N30- open circuit	Check fuel injectors. Refer to Fuel injectors, checking
P1238	17646	Cylinder 2 injector -N31- open circuit
P1239	17647	Cylinder 3 injector -N32- open circuit
P1240	17648	Cylinder 4 injector -N33- open circuit
P1250	17658	Fuel level too low	Follow-on DTC. Refer to Note (below) Refuel vehicle, erase Diagnostic Trouble Code (DTC) memory Check Diagnostic Trouble Code (DTC) memory of instrument cluster

NOTE: The DTC "Fuel level too low" is stored only in conjunction with misfiring or DTCs concerning Oxygen Sensor (O2S) control if too little fuel is or was in the tank. The DTC is stored in the control module as static DTC and is not set as a sporadic DTC even if the vehicle is refuelled in the meantime.

DTC code		DTC text	Corrective action
SAE	V.A.G
P1287	17695	Turbocharger divert air valve -N249- open circuit	Refer to 21 - TURBOCHARGER, G-CHARGER
P1288	17696	Recirculating valve for turbocharger -N249- Short circuit B+
P1289	17697	Recirculating valve for turbocharger -N249- Short circuit Ground (GND)
P1290	17698	Engine Coolant Temperature (ECT) Sensor (on radiator) -G83- Signal too large	Refer to 21 - TURBOCHARGER, G-CHARGER
P1291	17699	Engine Coolant Temperature (ECT) Sensor (on radiator) -G83- Signal too small	Refer to 21 - TURBOCHARGER, G-CHARGER

DTC code		DTC text	Corrective action
SAE	V.A.G
P1292	17700	Map Controlled Engine Cooling Thermostat -F265- Open circuit	Refer to 19 - ENGINE - COOLING SYSTEM
P1293	17701	Map Controlled Engine Cooling Thermostat -F265- Short circuit to B+
P1294	17702	Map Controlled Engine Cooling Thermostat -F265- Short circuit to Ground (GND)
P1296	17704	Malfunction in cooling system
P1297	17705	Connection charger-throttle valve Pressure drop	Check throttle valve for soiling. Refer to Throttle valve, checking for soiling .
P1298	17706	Engine Coolant Temperature (ECT) Sensor (on Radiator) -G83- Unplausible signal	Refer to 19 - ENGINE - COOLING SYSTEM

DTC code		DTC text	Corrective action
SAE	V.A.G
P1325	17733	Knock control - cylinder 1 control limit reached	Check knock control. Refer to Knock recognition control limit, checking
P1326	17734	Knock control - cylinder 2 control limit reached
P1327	17735	Knock control - cylinder 3 control limit reached
P1328	17736	Knock control - cylinder 4 control limit reached
P1335	17743	Engine torque monitoring 2 Value above upper control limit	Large leak, check Intake Air Temperature (IAT) sensor. Refer to Intake Air Temperature (IAT) sensor -G42-, checking Check Mass Air Flow (MAF) Sensor -G70-. Refer to Mass Air Flow (MAF) sensor -G70-, checking Check Engine Coolant Temperature (ECT) Sensor -G62-. Refer to Engine Coolant Temperature (ECT) sensor -G62-, checking
P1336	17744	Engine torque monitoring value above upper control limit

DTC code		DTC text	Corrective action
SAE	V.A.G
P1340	17748	Camshaft Position Sensor-G40-, Engine Speed Sensor-G28- incorrect allocation	Remove Camshaft Position (CMP) Sensor -G40- and check whether rotor trim is mounted properly at camshaft. (If mounted improperly, locking lug will be damaged when mounting bolt is tightened). Check engine timing. Refer to 13 - ENGINE - CRANKSHAFT, CYLINDER BLOCK
P1355	17763	Ignition activation cylinder 1 Open circuit	Check ignition coils with power output stages. Refer to Ignition coils with power output stages, checking
P1356	17764	Ignition activation cylinder 1 Short circuit to B+
P1357	17765	Ignition activation cylinder 1 Short circuit to Ground (GND)
P1358	17766	Ignition activation cylinder 2 Open circuit

DTC code		DTC text	Corrective action
SAE	V.A.G
P1359	17767	Ignition activation cylinder 2 Short circuit to B+	Check ignition coils with power output stages. Refer to Ignition coils with power output stages, checking
P1360	17768	Ignition activation cylinder 2 Short circuit to Ground (GND)
P1361	17769	Ignition activation cylinder 3 Open circuit
P1362	17770	Ignition activation cylinder 3 Short circuit to B+
P1363	17771	Ignition activation cylinder 3 Short circuit to Ground (GND)
P1364	17772	Ignition activation cylinder 4 Open circuit
P1365	17773	Ignition activation cylinder 4 Short circuit to B+
P1366	17774	Ignition activation cylinder 4 Short circuit to Ground (GND)

DTC code		DTC text	Corrective action
SAE	V.A.G
P1386	17794	Internal Control Module Memory Check Sum Error	Replace Engine Control Module. Refer to Engine Control Module (ECM) (without metal anti-theft housing), replacing
P1387	17795	Internal Control Module Memory Check Sum Error
P1388	17796	Internal Control Module Memory Check Sum Error
P1410	17818	Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- Short circuit to B+	Check Evaporative Emission (EVAP) Canister Purge Regulator -N80-. Refer to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, checking
P1421	17829	Secondary Air Injection (AIR) Solenoid Valve -N112- Short circuit to Ground (GND)	Refer to 26 - EXHAUST SYSTEM, EMISSION CONTROLS
P1422	17830	Secondary Air Injection (AIR) Solenoid Valve -N112- Short circuit to B+
P1424	17832	Bank1, secondary air system leak detected
P1425	17833	Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80- Short circuit to Ground (GND)	Check Evaporative Emission (EVAP) Canister Purge Regulator -N80-. Refer to Evaporative Emission (EVAP) Canister Purge Regulator Valve -N80-, checking
P1426	17834	Evaporative Emission System Pure Control Valve Circuit Open

DTC code		DTC text	Corrective action
SAE	V.A.G
P1427	17835	Brake vacuum pump activation Short circuit to B+	Refer to 47 - BRAKES - HYDRAULIC COMPONENTS
P1428	17836	Brake vacuum pump activation Short circuit to Ground (GND)
P1429	17837	Activation of brake vacuum pump Open circuit
P1432	17840	Secondary Air Injection System Switching Valve (A) Circuit Open	Refer to 26 - EXHAUST SYSTEM, EMISSION CONTROLS
P1433	17841	Secondary air pump relay -J299- open circuit
P1434	17842	Secondary Air Injection (AIR) Pump Relay -J299- Short circuit to B+
P1435	17843	Secondary Air Injection (AIR) Pump Relay -J299- Short circuit to Ground (GND)

DTC code		DTC text	Corrective action
SAE	V.A.G
P1471	17879	EVAP Emission Control LPD Circuit Short circuit to B+	Perform tank leak diagnostic. Refer to 20 - FUEL SUPPLY SYSTEM
P1472	17880	EVAP Emission Control LPD Circuit Short circuit to Ground (GND)
P1473	17881	Leak diagnosis pump - tank breather system open circuit
P1475	17883	Leak diagnosis pump - tank breather system malfunction/no signal
P1476	17884	Leak diagnosis pump - tank breather system malfunction/vacuum to low

DTC code		DTC text	Corrective action
SAE	V.A.G
P1479	17887	Brake vacuum system Mechanical malfunction	If DTC 17887 is present: Perform short trip UP 28. Refer to 47 - BRAKES - HYDRAULIC COMPONENTS ; Electric brake system vacuum pump, checking If test is OK, clear fault, necessary repair is necessary
P1500	17908	Fuel Pump Primary Circuit Fault in electrical circuit	Check Fuel Pump (FP) Relay. Refer to Fuel Pump (FP) relay -J17- and relay activation, checking
P1501	17909	Fuel Pump (FP) Relays -J17- Short circuit to Ground (GND)
P1502	17910	Fuel Pump (FP) Relay -J17- Short circuit to B+
P1517	17925	Main relay -J271- Electrical fault in circuit	Test Motronic ECM Power Supply Relay -J271-. Refer to Motronic ECM Power supply relay -J271-, checking
P1523	17931	Crash signal from airbag control module Unplausible signal 3)	Check airbag system Diagnostic Trouble Code (DTC) memory Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking

3) The DTC is stored with the relevant signal from airbag control module.

DTC code		DTC text	Corrective action
SAE	V.A.G
P1529	17937	Intake camshaft control circuit Short circuit to B+	Refer to 15 - ENGINE - CYLINDER HEAD, VALVETRAIN
P1530	17938	Intake camshaft control circuit
P1531	17939	Intake camshaft control circuit Open circuit
P1539	17947	Clutch Switch Input Circuit -F36- Unplausible signal	Check Clutch Vacuum Vent Valve Switch -F36-. Refer to Clutch Vacuum Vent Valve Switch -F36-, checking
P1541	17908	Fuel pump relay -J17- open circuit	Check Fuel Pump Relay -J17-. Refer to Fuel Pump (FP) relay -J17- and relay activation, checking
P1542	17950	Angle sender 1 for throttle valve drive -G187- implausible signal	Test Angle sensor -1- for throttle drive -G187-. Refer to Angle sensors -1- and -2- for throttle drive -G187- and -G188-, checking
P1543	17951	Angle sender 1 for throttle valve drive -G187- signal too low
P1544	17952	Angle sender 1 for throttle valve drive -G187- signal too high

DTC code		DTC text	Corrective action
SAE	V.A.G
P1545	17953	Throttle valve control system malfunction	Check Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, checking
P1546	17954	Turbo/Super Charger Wastegate Solenoid (A) High Input/Short to B+	Refer to 21 - TURBOCHARGER, G-CHARGER
P1547	17955	Turbo/Super Charger Wastegate Solenoid (A) Low Input/Short to ground
P1548	17956	Solenoid valve for charge pressure control -N75- open circuit
P1550	17958	Charge pressure control difference
P1555	17963	Value above maximum charge pressure
P1556	17964	Turbo/Super Charger Boost Sensor (A) Circuit Control limit not reached
P1557	17965	Turbo/Super Charger Overboost Condition Control limit exceeded

DTC code		DTC text	Corrective action
SAE	V.A.G
P1558	17966	Throttle valve drive -G186- electrical fault in circuit	Check Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, checking
P1559	17967	Throttle Valve Control Module -J338- Fault in basic settings	Perform adaptation. Refer to Throttle Valve Control Module -J338-, adapting
P1560	17968	Engine Overspeed Condition	Repair mechanical damage
P1564	17972	Throttle Valve Control Module -J338- insufficient voltage during basic settings	Charge battery, repeat basic setting
P1565	17973	Throttle Valve Control Module -J338- lower stop not reached	Check Throttle Valve Control Module -J338-. Refer to Throttle Valve Control Module -J338-, checking
P1568	17976	Throttle Valve Control Module -J338- Mechanical malfunction
P1569	17977	Cruise Control Set Signal Incorrect Signal	Check cruise control system. Refer to Cruise Control System (CCS) switch -E45-, testing

DTC code		DTC text	Corrective action
SAE	V.A.G
P1570	17978	Engine control unit disabled	Adapt Immobilizer to ECM. Refer to VAS 5051 vehicle diagnostic, testing and information system, connecting and selecting functions
P1579	17987	Throttle Valve Control Module -J338- Adaption not initiated	Perform adaptation of Throttle Valve Control Module -J338- in accordance with preconditions. Refer to Throttle Valve Control Module -J338-, adapting
P1602	18010	Voltage supply - terminal 30 Voltage too low	Check supply voltage for Engine Control Module (ECM). Refer to Motronic Engine Control Module (ECM) power supply, checking
P1603	18011	Internal Control Module Memory Check Sum Error	Replace Engine Control Module (ECM). Refer to Engine Control Module (ECM) (without metal anti-theft housing), replacing
P1604	18012	Internal Control Module Memory Check Sum Error
P1606	18014	Uneven road surface information/target engine torque from ABS control unit electrical fault in circuit	Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1609	18017	Crash shut-off was triggered 4)	Perform airbag system self-diagnosis After Output Diagnostic Test Mode (DTM) of airbag system erase Diagnostic Trouble Code (DTC) memory of engine control module. Refer to Diagnostic Trouble Code (DTC) memory, checking

4) The DTC is stored with the relevant signal from airbag control module, also with Output Diagnostic Test Mode (DTM) of the airbag system.

DTC code		DTC text	Corrective action
SAE	V.A.G
P1610	18018	Internal Control Module Memory Check Sum Error	Replace Engine Control Module (ECM). Refer to Engine Control Module (ECM) (without metal anti-theft housing), replacing
P1612	18020	Engine control unit incorrect coding	Code Engine Control Module (ECM). Refer to EnCoding II Engine Control Module (ECM)
P1620	18028	Signal for coolant temperature Open circuit/short circuit to B+	Check Engine Coolant Temperature (ECT) -G62- sensor. Refer to Engine Coolant Temperature (ECT) sensor -G62-, checking
P1621	18029	Signal for coolant temperature Short circuit to Ground (GND)
P1622	18030	Coolant temperature signal implausible signal
P1624	18032	Requirement - fault lamp on active 5)	Exhaust-relevant malfunction of Transmission Control Module -J217- Read out Diagnostic Trouble Code (DTC) memory of Transmission Control Module -J217-

5) The transmission control module has recognized a malfunction which causes the exhaust emissions of the engine to deteriorate. The malfunction message is sent by the transmission control module to the engine control module which now switches on the Malfunction Indicator Lamp (MIL) -K83-. Notes on Malfunction Indicator Lamp (MIL) -K83-. Refer to Malfunction Indicator Lamp (MIL) -K83- in instrument cluster . At the same time the message P1624 is displayed in the engine control module as an indication that the Malfunction Indicator Lamp (MIL) -K83- was not switched on due to an engine problem but due to a transmission problem.

DTC code		DTC text	Corrective action
SAE	V.A.G
P1626	18034	Data-bus-drivetrain missing message from transmission control module	Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1628	18036	Data-bus-drivetrain missing message from steering angle sensor
P1630	18038	Throttle/Pedal Position Sensor/Switch -C- Circuit Low	Check Throttle Position (TP) Sensor -G79-. Refer to Throttle Position (TP) sensor 1 -G79- and Sender -2- for accelerator pedal position -G185-, checking
P1631	18039	Throttle/Pedal Position Sensor/Switch -C- Circuit High
P1633	18041	Accelerator pedal position sender 2 -G185- signal too low
P1634	18042	Accelerator pedal position sender 2 -G185- signal too high
P1635	18043	Data-bus-drivetrain missing message from A/C control module	Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1636	18044	Data-bus-drivetrain missing message from airbag control module
P1639	18047	Throttle/Pedal Position Sensor/Switch -C- Circuit Range/Performance
P1640	18048	Internal Control Module Memory Check Sum Error	Replace Engine Control Module (ECM). Refer to Engine Control Module (ECM) (without metal anti-theft housing), replacing

DTC code		DTC text	Corrective action
SAE	V.A.G
P1648	18056	Data-Bus-driving gear faulty	Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1649	18057	Data-bus-drivetrain missing message from ABS control module
P1650	18058	Data-bus-drivetrain missing message from instrument cluster
P1654	18062	Check instrument cluster DTC memory.	Check Diagnostic Trouble Code (DTC) memory of instrument cluster
P1659	18067	Fan 1 Control Circuit High	Check Coolant Fan -V7-. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
P1660	18068	Fan 1 Control Circuit Low
P1672	18080	Radiator fan activation 1 Open circuit/short circuit to Ground (GND)

DTC code		DTC text	Corrective action
SAE	V.A.G
P1682	18090	Powertrain databus Unplausible message from ABS control module	Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1683	18091	Powertrain databus Unplausible message from airbag control module
P1687	18095	Data-Bus-driving gear Implausible message from climate control module
P1696	18104	Powertrain databus implausible signal from Steering Column Electronic	Engine Control Module (ECM) coded for cruise control system but cruise control system is not installed. Deactivate cruise control system. Refer to Coding II Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1698	18106	Read fault memory of Steering Column Electronic	Interrogate DTC memory of steering column electronics

DTC code		DTC text	Corrective action
SAE	V.A.G
P1699	18107	Powertrain databus missing message from Steering Column Electronic	Engine Control Module (ECM) coded for cruise control system but cruise control system is not installed. Deactivate cruise control system. Refer to Coding II Check CAN-bus. Refer to Data exchange, Motronic/ABS (CAN-bus), checking
P1912	18320	Brake Booster Pressure Sensor -G294- Short circuit to B+	Refer to 47 - BRAKES - HYDRAULIC COMPONENTS
P1913	18321	Brake Booster Pressure Sensor -G294- Short circuit to Ground (GND)	Refer to 47 - BRAKES - HYDRAULIC COMPONENTS
P1931	18339	Coolant FC (Fan Control) Control Module -J293- Malfunction	Check Coolant Fan Control Module -J293-. Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations

DTC		DTC text	Corrective action
SAE	VAG
P2181	18613	Cooling System Performance	Check Engine Coolant Temperature (ECT) Sensor -G62- Check thermostat. Refer to 19 - ENGINE - COOLING SYSTEM ; cooling system components, removing and installing
P3078	19534	Throttle Valve Control Module Air throughput too low at idle (soiled)	Clean throttle valve control module. Refer to Throttle valve control module, cleaning
P3081	19537	Engine temperature too low	Check Engine Coolant Temperature (ECT) Sensor -G62- Check thermostat. Refer to 19 - ENGINE - COOLING SYSTEM ; cooling system components, removing and installing