Diagnostic Trouble Code (DTC) table

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Passat, 1997 Volkswagen Jetta, and 1996 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

The malfunctions are listed in ascending order according to the 5-digit DTC.
The federally required SAE "P" codes can be found in the "SAE code" column. It applies ro emissions - related DTCs, and is located to the right of the "DTC" and "VAG1551 display/print-out" column.
DTCs that are not emissions-related, and do not have an associated SAE "P" code, are represented by a dash (-) in the "SAE code" column.
For an explanation of the indicated malfunction type, e.g. "Open circuit/short circuit to Ground," the scan tool operating instructions.
If testing indicates faulty components, first check the associated wiring and connectors and system Ground connections using the wiring diagrams ( "Electrical Wiring Diagrams, Troubleshooting & Component Locations" binder). This is particularly relevant if the malfunctions are accompanied by "/SP" in the display, and "sporadic DTC" in the print-out.
Before continuing with further testing, refer to the general instructions, see WIRING AND COMPONENT CHECKS, USING VAG1598/18 TEST BOX .
After repairing any malfunctions, erase DTC memory and create the readiness code.
MIL = Malfunction Indicator Lamp

DIAGNOSTIC TROUBLE CODE - 00513 TO 65535 (P0101 TO P1694

DTC VAG1551 display/printout	SAE code	MIL	Possible cause	Possible effect	Corrective action
00513 Engine Speed Sensor-G28 Incorrect signal	P0321	ON	G28 faulty Gap between speed sensor and trigger wheel too large Metal debris on G28 G28 mounting pedestal loose	Glow plug indicator light flashes Increased idle speed Poor starting Rough running Reduced power output No indication on tachometer	Check G28, see ENGINE SPEED (RPM) SENSOR, CHECKING
No signal	P0322	ON	G28 faulty Wiring open or short circuit		Check G28, see ENGINE SPEED (RPM) SENSOR, CHECKING
00519 Manifold Absolute Pressure Sensor-G71 Short circuit to B+	P1155	OFF	G71 in ECM faulty Boost pressure too high	Reduced power output Increased exhaust emissions	Check MAP sensor and BARO sensor, see MANIFOLD ABSOLUTE PRESSURE (MAP) AND BAROMETRIC PRESSURE (BARO) SENSORS, CHECKING Check wastegate bypass regulator valve -N75-, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-, see DIESEL DIRECT FUEL INJECTION (DFI) SYSTEM COMPONENTS, OVERVIEW
Open/Short circuit to Ground	P1156	OFF	G71 faulty Wiring has open circuit or short to Ground
Voltage supply	P1157	OFF	Wiring open or short circuit
00522 Engine Coolant Temperature Sensor - G62 Incorrect signal	P0116	ON	G62 faulty	Black exhaust smoke when starting Engine preheating not operating Glow plug glow period always 15 to 20 seconds	Check G62, see ENGINE COOLANT TEMPERATURE (ECT) SENSOR, CHECKING
Short circuit to Ground	P1255	ON	G62 faulty Wiring short circuit to Ground
Open/Short circuit to B+	P1256	ON	G62 faulty Wiring open or short circuit to positive
00527 Intake Air Temperature Sensor-G72 Short circuit to Ground	P1160	ON	G72 faulty Wire short circuit to Ground	Engine preheating not operating	Check G72, see INTAKE AIR TEMPERATURE (IAT) SENSOR, CHECKING
Open/Short circuit to B+	P1161	ON	G72 faulty Wiring open or short circuit to positive
00532 Supply Voltage (B+) Incorrect signal	-	OFF	Power supply (terminal 30, B+) relay -J317- faulty	Various running problems Engine will not start	Check voltage supply for Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-, see DIESEL DIRECT FUEL INJECTION (DFI) SYSTEM COMPONENT OVERVIEW
00539 Fuel Temperature Sensor -G81 Short circuit to Ground	P1162	OFF	G81 faulty Wiring short circuit to Ground	Increased exhaust emissions	Check G81, see FUEL TEMPERATURE SENSOR, CHECKING
Open/Short circuit to B+	P1163	OFF	G81 faulty Wiring open or short circuit to positive	Increased exhaust emissions
00542 Needle Lift Sensor-G80 Short circuit to Ground	P1245	ON	G80 faulty Wiring short circuit to Ground	Glow plug indicator light flashes Rough running Reduced power output Increased exhaust emissions	Check G80, see NEEDLE LIFT SENSOR, CHECKING
Incorrect signal	P1246	ON	Fuel supply was interrupted: Fuel shortage Cyl. 3 fuel injector line not OK Filter blocked Air in fuel system Injection pump faulty	Possible malfunction recognized (DTC 00550, Injection Start Control, Control difference) Misfiring, jerking	Check fuel system
Incorrect signal	P1246	ON		Other malfunction recognized (DTC 01268, Quantity Adjuster- N146, control difference) Rough running, misfire No throttle response after overrun	Replace injection pump (do not replace G80)
Incorrect signal (continued)	P1246	ON	Open circuit (sporadic) in wiring to fuel cut-off valve Engine will not start Misfire		Check wiring and connector on injection pump
			Engine speed sensor trigger wheel bent or loose Misfire at exactly 3000 RPM		Check trigger wheel
			G80 faulty	Glow plug indicator light flashes Rough running Reduced power output Increased exhaust emissions	Check G80, see NEEDLE LIFT SENSOR, CHECKING
Open/Short circuit to B+	P1247	ON	G80 faulty Wiring open or short circuit to positive
00545 Engine/Trans. Electrical Connection Incorrect signal	-	OFF	Wiring open or short circuit	Harsh gear changes	Check signals to and from automatic transmission
00550 Injection Start Control Control difference	P1248	ON	Cold start injector -N108- faulty Needle lift sensor -G80- faulty Fuel tank empty Fuel supply not OK; fuel supply shortage Air in fuel system Start of injection not OK	Rough running Reduced power output Increased exhaust emissions Poor cold-start behavior	Check injector -N108- using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS Check sensor -G80-, see NEEDLE LIFT SENSOR, CHECKING Fuel filter or fuel pipes blocked Check and adjust Start of injection, see START OF INJECTION, DYNAMICALLY CHECKING AND ADJUSTING
00553 Mass Air Flow Sensor-G70 Incorrect signal	P0101	ON	G70 faulty	Reduced power output Black exhaust smoke	Check EGR and MAF sensor -G70- functions, see EXHAUST GAS RECIRCULATION (EGR) AND MASS AIR FLOW (MAF) SENSOR, FUNCTIONS
Open/Short circuit to Ground	P1144	ON	G70 faulty Wiring open or short circuit to Ground
Short circuit to B+	P1145	ON	G70 faulty Wiring open or short circuit to positive
Voltage supply	P1146	ON	Wiring open or short circuit
00560 EGR System Control difference	P1403	ON	Intake air leaks (unmeasured air) EGR valve faulty (valve sticking, or diaphragm rod does not move)	Reduced power output Black exhaust smoke Too little or too much exhaust gas recirculation	Check EGR and MAF sensor -G70- functions, see EXHAUST GAS RECIRCULATION (EGR) AND MASS AIR FLOW (MAF) SENSOR, FUNCTIONS
00575 Manifold Absolute Pressure Control difference	P1550	OFF	Wastegate bypass regulator valve -N75- faulty Hose connections interchanged or hoses not connected	Reduced power output	Check wastegate bypass regulator valve -N75- using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
00625 Vehicle Speed Signal Incorrect signal	P0501	OFF	No signal from speedometer -G21- or speedometer vehicle speed sensor -G22-	Speedometer display faulty	Check speed signal, see VEHICLE SPEED SIGNAL, CHECKING
00625 Vehicle Speed Signal Incorrect signal	P0501	OFF
Signal to high	P1540	OFF
00626 Glow Plug Indicator Light -K29 Short circuit to B+	P1616	ON	Short circuit to positive	Glow plug indicator light not functioning	Check K29 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
Open/Short circuit to Ground	P1617	ON	Wiring open circuit Glow plug indicator light faulty	Glow plug indicator light not functioning
Open/Short circuit to Ground	P1617	ON	Short circuit to Ground	Glow plug indicator light permanently on
00668 Battery Positive Voltage (B+) Term.30 Incorrect signal	-	OFF	Power supply (terminal 30, B+) relay -J317- faulty	Engine will not start Various running problems	Check voltage supply, see TDI SYSTEM CURRENT SUPPLY, CHECKING
00671 Cruise Control Switch-E45 Undefined switch condition	-	OFF	E45 faulty Wiring open or short circuit	Cruise control switched off	Check cruise control system. See CRUISE CONTROL SYSTEM, SERVICING .
Control limit not reached	-	OFF	E45 faulty
Control limit exceeded	-	OFF
00741 Brake Pedal Position Monitoring Incorrect signal	-	OFF	Brake light switch - F- faulty Brake pedal position switch -F47- faulty Switch points of both switches not synchronized Fuse faulty Both brake lights faulty	Glow plug indicator light flashes Throttle response intermittent, reduced performance	Check switches -F- and -F47 -, see BRAKE LIGHT SWITCH AND BRAKE VACUUM VENT VALVE SWITCH, CHECKING
00750 Malfunction Indicator Lamp Short circuit to B+	P1693	OFF	Short circuit to positive	Glow plug indicator light not functioning	Check MIL, see MALFUNCTION INDICATOR LAMP (MIL)
Open/Short circuit to Ground	P1694	OFF	Wiring open circuit Bulb faulty	Malfunction Indicator Lamp (MIL) not functioning
Open/Short circuit to Ground	P1694	OFF	Short circuit to Ground	Malfunction Indicator Lamp (MIL) permanently on
00765 Slide Control Travel Sensor-G149	P1354	ON	Injection pump faulty Wiring open or short circuit	Glow plug indicator light flashes Various running problems Engine will not start	Check modulating piston displacement sensor and quantity adjuster, see MODULATING PISTON DISPLACEMENT SENSOR AND QUANTITY ADJUSTER, CHECKING
00777 Throttle Position Sensor-G79 Incorrect signal	P0121	ON	G79 faulty G79 incorrectly set	Glow plug indicator light flashes Increased idle speed	Check G79, see THROTTLE POSITION (TP) SENSOR, CHECKING Check adjustment of G79, see THROTTLE POSITION (TP) SENSOR, REMOVING, INSTALLING AND ADJUSTING
Short circuit to B+	P0123	ON	G79 faulty Wiring short circuit to positive	Glow plug indicator light flashes Engine governed with 1100 RPM limit	Check G79, see THROTTLE POSITION (TP) SENSOR, CHECKING
Voltage supply	P1632	ON	Wiring open or short circuit		Check G79, see THROTTLE POSITION (TP) SENSOR, CHECKING
01044 Control Module incorrectly coded	P1612	OFF	Invalid ECM coding	Glow plug indicator light flashes	Code Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-, see CODE CONTROL MODULE (SCAN TOOL FUNCTION 07)
01050 Glow Plug Monitoring	P0380	ON	Glow Plug Relay -J52- faulty Glow plug faulty Incorrect glow plugs installed	No glow period Rough running	Check glow plug relay using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS Check glow plugs, see GLOW PLUGS, CHECKING
01117 Generator Terminal DF Load Signal Incorrect signal	-	OFF	Generator faulty Voltage regulator faulty	Engine preheating not functioning	Check generator. See GENERATOR TROUBLESHOOTING (UP TO EARLY PRODUCTION 1999) .
01180 Engine/AC Electrical Connection Short circuit to B+	-	OFF	Wiring short circuit	Vehicle acceleration reduced with A/C switched on	Check A/C compressor using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
01193 Low Heat Output-J359 Short circuit to B+	-	OFF	Short circuit to positive	Engine preheating not functioning	Check relays -J359- or -J360- using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS Check wiring
01194 High Heat Output-J360 Short circuit to B+	-	OFF	Short circuit to positive	Engine preheating not functioning	Check relays -J359- or -J360- using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS Check wiring
01237 Fuel Cut-off Valve-N109 Mechanical malfunction	P1537	OFF	N109 faulty, leaking or sticking	Reduced power output Engine will not start	Check N109 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
Open/Short circuit to Ground	P1538	OFF	N109 faulty Wiring open or short circuit to Ground	Engine will not start
01262 Wastegate Bypass Regulator Valve-N75 Short circuit to B+	P1546	OFF	Short circuit to positive	Reduced power output Boost pressure too low	Check N75 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
Open/Short circuit to Ground	P1549	OFF	Wiring open circuit N75 faulty	Reduced power output Boost pressure too low	Check N75 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
Open/Short circuit to Ground	P1549	OFF	Short circuit to Ground	Reduced power output Boost pressure too high
01265 EGR Vacuum Regulator Solenoid Valve-N18 Open/Short circuit to Ground	P1401	ON	Wiring open circuit EGR vacuum regulator solenoid valve faulty	No exhaust gas recirculation	Check N18 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
	P1401	ON	Short circuit to Ground	Too much exhaust gas recirculation Reduced power output Black exhaust smoke
Short circuit to B+	P1402	ON	Short circuit to positive	No exhaust gas recirculation
01266 Glow Plug Relay- J52 Short circuit to B+	P1618	ON	Short circuit to positive	Glow plug system not functioning	Check J52 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS Check glow plug system, see GLOW PLUG SYSTEM, CHECKING
Open/Short circuit to Ground	P1619	ON	Wiring open circuit Glow plug relay faulty	Glow plug system not functioning
Open/Short circuit to Ground	P1619	ON	Short circuit to Ground	Glow plug system permanently on
01268 Quantity Adjuster-N146 Control difference	P1561	OFF	Injection pump faulty Wiring open or short circuit	Glow plug indicator light flashes Various running problems Engine will not start	Check modulating piston displacement sensor and quantity adjuster, see MODULATING PISTON DISPLACEMENT SENSOR AND QUANTITY ADJUSTER, CHECKING
Upper stop value	P1562	ON	Quantity adjuster incorrectly set	Glow plug indicator light flashes Jerking, poor performance
Lower stop value	P1563	ON	Quantity adjuster incorrectly set	Glow plug indicator light flashes Black exhaust smoke Rough running
01269 Injection-Start Valve-N108 Short circuit to B+	P1251	ON	Short circuit to positive	Engine knocks at idle because start of injection is constantly "advanced"	Check N108 using output diagnostic test mode, see OUTPUT DIAGNOSTIC TEST MODE, CHECKS
Open/Short circuit to Ground	P1252	ON	Wiring open circuit Cold start injector faulty
Open/Short circuit to Ground	P1252	ON	Short circuit to Ground	Poor performance because start of injection is constantly "retarded"
65535 Control Module Malfunctionng Faulty	P0605	OFF	Engine Control Module (ECM) internal malfunction	Various running problems Engine will not start	Replace Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-, see DIESEL DIRECT FUEL INJECTION (DFI) SYSTEM COMPONENTS, OVERVIEW
65535 Control Module Malfunctionng Faulty	P0605	OFF	Communication problem between scan tool and ECM	No effect	Erase DTC memory, keep vehicle under observation