check engine AUDI A4 2000 B5 / 1.G APB Engine Motronic Syst

01-19
Diagnostic Trouble Code (DTC) table

Notes:

If malfunctions occur in the sensors and components being monitored, they will be stored in the DTC memory together
with an indication of the type of malfunction. Notes on Engine Power Control (EPC) (drive by wire) Page 24
-139
.
Malfunctions relating to the electronic throttle are also indicated by the EPC (Electronic Power Control) warning light in the
instrument cluster.
Malfunction which decrease exhaust emissions are indicated by an Exhaust Malfunction Indicator Light (MIL), the MIL is
located in the instrument cluster. As soon as certain malfunction are recognized, the MIL is switched on immediately.
There are also malfunctions, were the MIL is switched on only after the engine is started again.
Sporadically occurring malfunctions (temporary malfunctions) will be indicated on the VAG1551 display as "SP."
The DTC table is arranged according to the 5-digit DTC in the left-hand column.
If a malfunction is stored in the DTC memory and then does not occur again during the next 40 engine warm-up phases,
the DTC will be automatically erased.
Components that are indicated as being faulty by the VAG1551 should not be replaced immediately. Always start by
checking the wiring, connectors and Ground (GND) connections for the component using the current wiring diagram. This
is particularly important in the case of sporadic malfunctions (indicated by the letters "SP"on the scan tool display).
If the connector for the engine control module is disconnected or if the battery is disconnected, all the learned values
(adaptation values) stored in the control module will be erased, although the contents of the DTC memory will remain
intact. The next time the engine is started the idling may be rough at first. In this case let the engine run at idle for a few
Pa
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01-20

DTC
Description of malfunction
Corrective action
SAE
VAG


P0101 16485 Mass Air Flow (MAF) sensor -
G70-
Implausible signal - Check Mass Air Flow (MAF) sensor Page 24
-59
P0102 16486 Mass or Volume Air Flow
Circuit
Low input
2) - Check Mass Air Flow (MAF) sensor -G70 Page 24
-59
P0103 16487 Mass or Volume Air Flow
Circuit
High Input
2)

P0106 16490 Manifold Abs.Pressure or
Bar. Pressure
Range/Performance
2) 4)
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Repair
Group 21; Turbocharger; Checking Charge Air Pressure Sensor -G31
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
4) Absolute manifold pressure will be determined by the Charge Air Pressure Sensor -G31 (instead of displayed -G71), the air
pressure is determined by the Barometric Pressure (BARO) Sensor -F96 (in Engine Control Module (ECM))
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01-21

DTC
Description of malfunction
Corrective action
SAE
VAG


P0112 16496 Intake Air Temp. Circ.
Low Input
2) - Check Intake Air Temperature (IAT) sensor Page 28
-17
P0113 16497 Intake Air Temp.
High Input
2)
P0116 16500 Engine Coolant Temp. Circ.
Range/Performance - Check Engine Coolant Temperature (ECT) sensor Page 28
-25
P0117 16501 Engine Coolant Temp. Circ.
Low Input
2)
P0118 16502 Engine Coolant Temp. Circ.
High Input 2)
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
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01-22

DTC
Description of malfunction
Corrective action
SAE
VAG


P0130 16514 02 Sensor Circ., Bank1-
Sensor1
Malfunction
2) - Check oxygen sensor control or oxygen sensor heater and wiring
Page 24
-79

P0131 16515 02 Sensor Circ., Bank1-
Sensor1
Low Voltage
2)
P0132 16516 02 Sensor Circ., Bank1-
Sensor1
High Voltage 2)
P0133 16517 02 Sensor Circ., Bank1-
Sensor1
Slow Response2)
P0134 16518 02 Sensor Circ., Bank1-
Sensor1
No Activity Detected
2)
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
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01-23

DTC
Description of
malfunction
Corrective action
SAE
VAG


P0136 16520 02 Sensor Circ., Bank1-
Sensor2
Malfunction
2) - Check oxygen sensor heater Page 24
-114
P0137 16521 02 Sensor Circ., Bank1-
Sensor2
Low Voltage
2) - Check oxygen sensor signal wire and activation Page 24
-122
P0138 16522 02 Sensor Circ., Bank1-
Sensor2
High Voltage
2)
P0139 16523 02 Sensor Circ., Bank1-
Sensor2
Slow Response2) - Check oxygen sensor and oxygen sensor control behind catalytic
converter Page 24
-100

P0140 16524 02 Sensor Circ., Bank1-
Sensor2
No Activity Detected
2)
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
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01-24

DTC
Description of malfunction
Corrective action
SAE
VAG


P0150 16534 02 Sensor Circ., Bank2-
Sensor1
Malfunction
2) - Check oxygen sensor control or oxygen sensor heater and wiring
Page 24
-79

P0151 16535 02 Sensor Circ., Bank2-
Sensor1
Low voltage
2)
P0152 16536 02 Sensor Circ., Bank2-
Sensor1
High Voltage 2)
P0153 16537 02 Sensor Circ., Bank2-
Sensor1
Slow Response 2)
P0154 16538 02 Sensor Circ., Bank2-
Sensor1
No Activity Detected
2)
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
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01-25

DTC
Description of
malfunction
Corrective action
SAE
VAG


P0156 16540 02 Sensor Circ., Bank2-
Sensor2
Malfunction
2) - Check oxygen sensor heater Page 24
-114
P0157 16541 02 Sensor Circ., Bank2-
Sensor2
Low Voltage
2) - Check oxygen sensor signal wire and activation Page 24
-122
P0158 16542 02 Sensor Circ., Bank2-
Sensor2
High Voltage
2)
P0159 16543 02 Sensor Circ., Bank2-
Sensor2
Slow Response 2) - Check oxygen sensor and oxygen sensor control behind catalytic
converter Page 24
-100

P0160 16544 02 Sensor Circ., Bank2-
Sensor2
No Activity Detected
2) - Check oxygen sensor heater Page 24
-114
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
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01-26

DTC
Description of
malfunction
Corrective action
SAE
VAG


P0236 16620 Charge air pressure
sensor -G31-
Implausible signal Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s):
APB, Repair Group 21; Boost pressure system with turbocharger; charge air pressure sensor
-G31
-, checking

P0237 16621 Turbocharger Boost
Sensor (A) Circ
Low Input
2) Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Repair Group 21;
Turbocharger; Checking Charge Air Pressure Sensor -G31
P0238 16622 Turbocharger Boost
Sensor (A) Circ
High Input
2)
2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
Pa
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01-27

DTC
Description of malfunction
Corrective action
SAE
VAG


P0300 16684 Random/Multiple Cylinder
Misfire Detected
2) - Check cause for misfire Page 28
-52
P0301 16685
Cyl.1 Misfire Detected
2)
- Check fuel tank level
P0302 16686
Cyl.2 Misfire Detected 2)

P0303 16687
Cyl.3 Misfire Detected 2)

P0304 16688
Cyl.4 Misfire Detected 2)

P0305 16689
Cyl.5 Misfire Detected 2)

P0306 16690
Cyl.6 Misfire Detected 2)

2) With this malfunction the exhaust Malfunction Indicator Light (MIL) is only switched on by the ECM, if the malfunction is
recognized after the engine has been restarted. Significance of MIL Page 01
-3 .
The Malfunction Indicator Light (MIL) will blink if the Engine Control Module (ECM) recognizes misfire that could damage the
catalytic converters.
Notes:

On malfunction which could be caused by lack of fuel (e.g.: misfire) the malfunction P1250 "Fuel level too low" will be
displayed in addition. That means, the misfiring was detected due to lack of fuel in the tank and not due to a technical
malfunction.
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01-28

DTC
Description of malfunction
Corrective action
SAE
VAG


P0321 16705 Ign./Distributor Eng. Speed Inp. Circ.
Range/Performance
2) - Check Engine Speed Sensor Page 28
-21
P0322 16706 Ign./Distributor Eng. Speed Inp. Circ.
No Signal
2)
P0327 16711 Knock Sensor 1 Circ.
Low Input - Check Knock Sensor Page 28
-41
P0328 16712 Knock Sensor 1 Circ.
High Input
P0332 16716 Knock Sensor 2 Circ.
Low Input
P0333 16717 Knock Sensor 2 Circ.
High Input
P0341 16725 Camshaft Pos. Sensor Circ.
Range/Performance
2) - Check Camshaft Position Sensor Page 28
-45
P0346 16730 Camshaft Pos. Sensor Circ. 2
Range/Performance
2)
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