I Engine code AAA |

Diagnostic Trouble Code (DTC), Chart

Requirements

• multi-function indicator and speedometer (G21)OK

• before replacing components coded as faulty, first check the wiring and ground connections to these components using the proper wiring diagram. This is particularly relevant if the malfunction is displayed as being sporadic or "SP"

• the DTC (Diagnostic Trouble Code) and the blink code will only print out when the "Rapid data transfer" mode and then only if the Scan Tool printer is switched ON

Example:


		DTC (Diagnostic Trouble Codes)
		5 digit (Rapid data transfer) 65535	4 digit (blink code) 1111

Fuel and Ignition 01-77


VAG 1551 display	Possible cause	Corrective step
No malfunction recognized	If a malfunction is present; it is not being recognized by OBD (On Board Diagnosis)
00281 1231
Vehicle speed sensor (G 68)	Multi-function indicator gets no signal from speedometer (G 21)	=> wiring diagrams, repair or replace as necessary
Impossible signal No signal*
*To check the road speed signal; drive	i the vehicle at full load and raise the engine speed to 4500 RPM minimum.
00513 2111
Engine speed sensor (G 28)	(G 28) malfunctioning	♦ check (G 28) and related wiring, using wiring diagram, repair or replace as necessary
No signal	Open circuit in wiring	=> page 01-109, Test step 26
Impossible signal*	Sensor wheel for engine speed sensor malfunctioning or loose	♦ check sensor wheel for secure fit => Repair Groups 13 and 24
	(G 28) loose	« check tightness of (G 28)
*lt is unlikely that a malfunction due to	abrupt stalling of the engine (sporadic) will be stored.
00515 2113
Camshaft position sensor (G 40)	Camshaft position sensor (G 40) rotor twisted	♦ check distributor ♦ check control times
Open circuit/short to positive	Open circuit or short to positive in wiring (G 40)	♦ check wiring to (G 40) =* page 01-108, Test step 19
Short to ground	Short to ground in wiring (G 40)	♦ check wiring to (G 40) => page 01 -108, Test step 19

Fuel and Ignition 01-78


VAG 1551 display	Possible cause	Corrective step
00518 2212
Throttle position sensor (G 69)	Open circuit or short to positive in	♦ check wiring together with (G 69)
	wiring (G 69)
Short to positive	Short to ground in (G 69) wiring	=> page 01-107, Test step 18
Short to ground		♦ check wiring together with (G 69)
		for short lo ground using wiring
		diagram, repair or replace as
		necessary
00522 2312
Engine coolant temperature sender (G 62)* Short to ground	(G 62) malfunctioning	♦ check wiring and (G 62) for short
Engine coolant temperature sender (G 62)* Short to ground	Short to ground in wiring	=> page 01 -107, Test step 15
Open circuit/short to positive	(G 62) malfunctioning, or corrosion
	on connector
	Open circuit/short to positive in wiring
00524 2142
Knock sensor I (G61)	(G61) malfunctioning	♦ replace (G 61)
Open circuit/short to positive	Open circuit/short circuit in sensor	♦ check wires to (G 61)
	wiring	=> page 01-108, Test step 21
	Knocking not recognized by Motronc	♦ replace (J 220)
	engine control module (J 220)
00525 2342
Oxygen sensor probe (G 39)*	(G 39) malfunctioning	♦ replace (G 39)
No signal	Open circuit	♦ check wiring to (G 39)
Short to positive	Open circuit or short to positive	=> page 01-107, Test step 17
Short to ground	Short to ground in wiring or in (G 39)
	Fuel level too low	♦ fill fuel tank then erase DTC
		Memory

Fuel and Ignition 01-79


VAG 1551 display	Possible cause	Corrective step
00527 2412
Intake air temperature sensor (G 42)	(G 42) malfunctioning	♦ replace (G 42)
Short to ground	Short to ground in wiring or (G 42)	♦ check wiring together with (G 42) for a short to ground
Open circuit/short to positive	(G 72) malfunctioning	=> page 01-108, Test step 22
00532 2234
Supply voltage* Too high	Battery voltage above 16.0 V	♦ check generator (alternator) output
Too low	Battery voltage below 10.0 V	=> page 01-105, Test steps 1 + 2
00533 2231
Idle regulation adaption limit exceeded	Idle Air Control (IAC) valve (N 71) stuck or dirty	♦ check IAC valve. => Repair Group 24
		♦ check intake air system, => Repair Group 24
Adaption limit not met	Air leak between Mass Air Flow sensor (G 70) and engine	♦ for vehicles with EGR, check EGR valve, => Repair Group 26
00535 2141
First knock regulation
Impossible signal	Knock regulation in ECM (J 220) defective	♦ replace (J 220)
The engine control module DOES NOT check voltage until the engine has been running for 3 minutes

Fuel and Ignition 01-80


VAG 1551 display	Possible cause	Corrective step
00537 2341 Oxygen sensor regulation'	O₂S (Oxygen Sensor) probe heater defective	♦ check voltage supply to probe heater, => page 01-106, Test step 4
Regulating limit exceeded	Exhaust system leaking between cylinder head and catalyst Misfiring Intake air system leaking (outside air) Injector(s) (N 30, N 31, N 32, N 33, N 83, N 84) malfunctioning Fuel pressure too low Hot wire for MAF sensor (G 70) not burning off cleanly EVAP canister purge regulator valve (N 80) stuck (always open)	♦ check O₂S heater for continuity ♦ check exhaust system ♦ check ignition system components ♦ check intake air system ♦ Check N 30, N 31, N 32, N 33, N 83, N 84) => Repair Group 24 ♦ check fuel pressure regulator ♦ check (G 70) ♦ perform Output DTM (Output checks)
Regulating limit not reached	Fuel pressure too high Injector(s) (N 30, N 31, N 32, N 33, N 83, N 84) malfunctioning, leaking	♦ check fuel pressure regulator ♦ check (N 30, N 31, N 32, N 33, N 83, N 84)
Signal to ground	Short to ground in O₂S (Oxygen Sensor) probe (G 39) or in wiring	♦ check wiring together with (G 39) for short to ground, => page 01-107, Test step 17

Fuel and Ignition 01-81


VAG 1551 display	Possible cause	Corrective step
00540 2144
Knock sensor II (G 66)	(G 66) malfunctioning	♦ replace (G 66)
No signal	Open circuit/short circuit in sensor wiring	♦ check wires to (G 66) => page 01-109, Test step 24
	Knocking not recognized by Motronic engine control module (J 220)	♦ replace (J 220)
00543 2214
Maximum engine speed exceeded	Incorrect switching (internal) causes control to exceed speed governor
Signal too high	Signal from Engine RPM (speed) sensor (G 28) defective	♦ check wires together with (G 28) shield, => page 01-109, Test step 26
00545 2314
Engine/transmission electrical connection	Wire has short to ground	♦ determine and eliminate short using wiring diagram, repair or replace as necessary
Short to ground
00553 2324
Mass air flow sensor (G 70)*	(G 70) malfunctioning	♦ check wiring to (G 70)
Signal too high	Short to positive in wiring	♦ replace (G 70), => page 01-109, Test step 25
Signal to low	(G 70) malfunctioning or short to ground in wiring	♦ check wiring to (G 70), if wiring OK, replace (G 70)
	Air leak between (G 70) and engine (outside air)	♦ eliminate leaks

Fuel and Ignition 01-82


VAG 1551 display	Possible cause	Corrective step
00561 2413 Mixture adaption Adaption limit exceeded or Adaption limit not reached	Fuel pressure NOT OK Misfiring Intake air system leaking (outside air) Injector(s) (N 30, N 31, N 32, N 33, N 83, N 84) defective, leaking Hot wire for MAF sensor (G 70) not burning off cleanly O₂S (Oxygen Sensor) regulation faulty Exhaust system leaking between cylinder head and catalyst EVAP canister purge regulator valve (N 80) sticks in open position	♦ check fuel pressure regulator ♦ check ignition system components ♦ check intake air system ♦ check (N 30, N 31, N 32, N 33, N 83, N 84) ♦ check (G 70), => page 01-109, Test step 25 ♦ check wire to O₂S (Oxygen Sensor) probe ♦ check exhaust system ♦ perform Output DTM (Output checks)
00585 2411 EGR temperature sensor (G 98)* Short to ground	Temperature sensor in EGR valve (G 98) malfunctioning or wire is shorted to ground	♦ check wires to (G 98), => page 01-110, Test step 29
00586 Controlling EGR system Impossible signal	EGR valve sticks or is malfunctioning	♦ check EGR valve, => Repair Group 26

Fuel and Ignition 01-83


VAG 1551 display	Possible cause	Corrective step
01025 Triggering for On Board Diagnostic (OBD) lamp malfunctioning Short in positive Open circuit/short to ground	Wiring has short to positive Malfunction indicator lamp malfunctioning	♦ check wiring using wiring diagram, also => page 01-106, Test step 5
01242 4332 Output stages in engine control module Mechanical malfunction	Loose terminal to one of the Output DTM components or to the Motronic engine control module (J 220)	♦ perform Output DTM (Output check) diagnosis ♦ check for loose terminal or connection in wiring to one of the Output DTM components or replace (J 220) if necessary
01247 4343 EVAP canister purge regulator valve (N80) Open circuit/short to positive Open circuit/short to negative	(N 80) malfunction or short to positive in wiring (N 80) malfunction or short to negative in wiring	♦ check wiring together with (N 80), => page 01-106, Test step 14
01249 4411 Injector for No. 1 cyl. (N 30) Open circuit/short to positive Open circuit/short to negative	(N 30) malfunction or short to positive positive (N 30) malfunction or short to negative negative	♦ check wiring together with (N 30) => page 01-106, Test step 8 ♦ check wiring together with (N 30) =» page 01 -106, Test step 8

Fuel and Ignition 01-84


VAG 1551 display	Possible cause	Corrective step
01250 4412 Injector for No. 2 cyl. (N 31)	=> No. 1 cylinder (DTC Code 01249)	♦ check wiring and (N 31), => page 01-106, Test step 9
01251 4413 Injector for No. 3 cyl. (N 32)	=> No. 1 cylinder (DTC Code 01249)	♦ check wiring and (N 32), => page 01-106, Test step 10
01252 4414 Injector for No. 4 cyl. (N 33)	=> No. 1 cylinder (DTC Code 01249)	♦ check wiring and (N 33), => page 01-106, Test step 11
01253 4421 Injector for No. 5 cyl. (N 83)	=> No. 1 cylinder (DTC Code 01249)	♦ check wiring and (N 83), => page 01-106, Test step 12
01254 4422 Injector for No. 6 cyl. (N 84)	=> No. 1 cylinder (DTC Code 01249)	♦ check wiring and (N 84), => page 01-106, Test step 13
01257 4431 Idle air control valve (N 71) Signal to positive Signal to ground Mechanical malfunction	(N 71) malfunction or short to positive (N 71) malfunction or short to negative in wiring (N 71) malfunction	♦ check wires together with (N 71) => page 01-108, Test step 23 ♦ perform Output DTM (Output check) diagnosis
01259 4433 Fuel pump relay (J 17) Short to positive	(J 17) malfunction or wire has short to positive	♦ check wiring and (J 17), => section D2-200, Test step 3

Fuel and Ignition 01-85


VAG 1551 display	Possible cause	Corrective step
01265 4312 EGR vacuum regulator solenoid valve (N 18) Open circuit/short to ground Short to positive	EGR valve (N 18) malfunction or open circuit or wiring is shorted to ground (N 18) malfunction or wiring is shorted positive	♦ check wiring to (N 18), => page 01-110, Test step 28 ♦ check wiring and (N 18), => pages 01-109, 01-110, Test steps 27 and 28
65535 1111 ECM malfunctioning	Components in the Motronic engine control module (J 220) are malfunctioning	♦ replace (J 220)

Fuel and Ignition 01-86