check engine AUDI A4 1998 B5 / 1.G APB Engine Motronic Syst

01-66

DTC
Description of malfunction
Corrective action
SAE
VAG


P1558 17966 Throttle Actuator
Electrical Malfunction
1)3)
- Check throttle valve control module Page 24
-145
P1559 17967 Idle Speed Contr. Throttle Pos.
Adaptation Malfunction
2) - Perform adaptation Page 24
-146
P1560 17968 Maximum Engine Speed Exceeded
- Repair mechanical damage
P1564 17972 Idle Speed Control Throttle Position
Low Voltage During Adaptation - Charge battery or repeat adaptation Page 24
-146
P1565 17973 Idle Speed Control Throttle Position
Lower Limit not Attained
1) 3)
- Check throttle valve control module Page 24
-145
P1568 17976 Idle Speed Control Throttle Position
Mechanical Malfunction
1) 3)

1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM. Significance of EPC malfunction indicator light Page 24
-142
.
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 .
3) With this malfunction the exhaust Malfunction Indicator Light (MIL) is switched on by the ECM, immediately after the
Pa
ge 79 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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01-67

DTC
Description of
malfunction
Corrective action
SAE
VAG


P1569 17977 Cruise control switch
Incorrect signal
Repair Manual, Electrical Equipment, Repair Group 01, On Board
Diagnostic for CCS
- Check switch for Cruise Control System (CCS)
P1570 17978 Control Module Locked
Repair Manual, Electrical Equipment, Repair Group 01, On Board
Diagnostic of immobilizer
- Perform adaptation for immobilizer to ECM
P1579 17987 Idle Speed Contr.Throttle
Pos.
Adaptation not started - Perform adaptation of throttle valve control module while maintaining test
requirements Page 24
-146

P1600 18008 Power Supply (B+)
Terminal 15
Low Voltage - Check voltage supply for Engine Control Module (ECM) Page 28
-32
P1602 18010 Power Supply (B+)
Terminal 30
Low Voltage
Pa
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01-68

DTC
Description of
malfunction
Corrective action
SAE
VAG


P1603 18011 Internal Control Module
Malfunction
2) - Replace Engine Control Module (ECM) Page 24
-24
.
P1604 18012 Internal Control Module
Malfunction
1)3)

P1606 18014 Rough Road Spec Engine
Torque ABS-ECU
Electrical Malfunction
Electrical Wiring Diagrams, Troubleshooting & Component Locations - Check wire connection between ECM and ABS control module Page 24
-
198

P1609 18017 Crash shut-down
activated Accident with airbag triggered or a output Test Diagnostic Mode (TDM) has
been carried out, therefore erase DTC Memory in ECM; Notes crash signal
Page 24
-196

P1612 18020 Electronic Control Module
2)
Incorrect Coding - Check or code Engine Control Module (ECM) Page 01
-93
1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM. Significance of EPC malfunction indicator light Page 24
-142
.
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 .
3) With this malfunction the exhaust Malfunction Indicator Light (MIL) is switched on by the ECM, immediately after the
malfunction has been recognized. Significance of MIL Page 01
-3 .
Pa
ge 82 of 166 Motronic s
ystem, On Board Dia
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)
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01-69

DTC
Description of malfunction
Corrective action
SAE
VAG


P1620 18028 Engine coolant temperature signal
Open/short to B+
P1621 18029 Engine coolant temperature signal
Short to ground - Check coolant temperature signal Page 24
-181
P1622 18030 Engine coolant temperature signal
Range/Performance Note for malfunctions P1620, P1621 and P1622:
The Engine Control Module (ECM) receives the "Coolant temperature signal" from the instrument cluster. When the ECM
receives this signal the boost pressure will be decreased.
Pa
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01-70

DTC
Description of malfunction
Corrective action
SAE
VAG


P1624 18032 MIL Request Sign. active Exhaust relevant malfunction from Transmission Control Module (TCM),
MIL is switched on by TCM
Repair Manual, Automatic Transmission, Repair Group 01, Perform
On Board Diagnostic - Check DTC Memory of TCM
P1626 18034
Data-Bus Powertrain
2)
Missing message from fuel
injection pump - Check CAN-Bus Page 24
-201
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 .
Note for malfunction P1624:

MIL stands for Malfunction Indicator Light. Once the Engine Control Module (ECM) recognizes a malfunction that
decreases the exhaust emissions it switches the MIL on.
The MIL is switched on only by the Engine Control Module (ECM), since the ECM has the only connection to the MIL..
Malfunction that decrease the exhaust emissions can also be recognized by the Transmission Control Module (TCM),
These malfunction are also indicated by the MIL.
Pa
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01-72

DTC
Description of malfunction
Corrective action
SAE
VAG


P1639 18047 Accelera. Pedal Pos.
Sensor1+2
Range/Performance
1) 3)
- Check acceleration pedal position sensor Page 24
-159
P1640 18048 Internal Control Module
(EEPROM)
Error
2) - Replace Engine Control Module (ECM) Page 24
-24
.
P1648 18056 Data Bus Powertrain
Malfunction - Check data exchange between Engine-/ABS-/Transmission control
module Page 24
-201

P1649 18057 Data Bus Powertrain
Missing message from ABS
Control Module Repair Manual, Brake System On Board Diagnostic (OBD), Repair
Group 01, checking DTC memory of ABS control module
- Check DTC memory of ABS control module
- Check data exchange between Engine-/ABS-/Transmission control
module Page 24
-201

1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM. Significance of EPC malfunction indicator light Page 24
-142
.
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
ge 87 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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e=re
pair&id=AUDI.B5.FU04.01.1

01-73

DTC
Description of malfunction
Corrective action
SAE
VAG


P1650 18058 Powertrain CAN-bus
Missing message from instrument
cluster - Check data transfer Page 24-201
P1654 18062 Check DTC memory of the instrument
cluster - Check DTC memory of instrument cluster and repair
malfunctions
P1676 18084 Drive by Wire-MIL Circ.
Electrical Malfunction
1) - Significance of Electronic Power Control (EPC) warning light
Page 24
-142

P1677 18085 Drive by Wire-MIL Circ.
Short to B+
1)

P1690 18098 Malfunction Indication Light
Malfunction 2) - Check wiring for exhaust Malfunction Indicator Light (MIL)
Page 01
-4
P1693 18101 Malfunction Indication Light
Short circuit to B+
2)
1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM. Significance of EPC malfunction indicator light Page 24
-142
.
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
ge 89 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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01-74

DTC
Description of malfunction
Corrective action
SAE
VAG


P1851 18259 Data Bus Powertrain
Missing Message from Brake Contr
Repair Manual, Brake System On Board Diagnostic (OBD), Repair
Group 01, checking DTC memory of ABS control module
- Check DTC memory of ABS control module
- Check data exchange between Engine-/ABS-
/Transmission control
module Page 24
-201

P1853 18261 Data Bus Powertrain
Unplausible Message from Brake
Contr.
P1854 18262 Data Bus Powertrain
Hardware Defective
P3262 19718 Exhaust bank 1/2 oxygen sensors
behind catalytic converter
mixed up - Check harness connectors for oxygen sensors and check installed
position of oxygen sensors behind catalytic converter. 1) With this malfunction the EPC (Electronic Power Control) Malfunction Indicator Light (MIL) in the instrument cluster is
switched on by the ECM. Significance of EPC malfunction indicator light Page 24
-142
.
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
ge 91 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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01-79

Actuating Secondary Air Injection (AIR)
Solenoid Valve -N112

Note:
Only vehicles with automatic transmission are
equipped with a secondary air injection system.
Vehicles with manual transmission do not have a
secondary air injection system. For this reason
are on vehicles with manual transmission the
following components Secondary Air Injection
(AIR) Solenoid Valve -N112 and Secondary Air
Injection (AIR) Pump Relay -J299 not displayed.

-
Press button.Output Diagnostic Test Mode Secondar
y Air
(AIR
) Injection valve -N112

Indicated on display
This solenoid valve will continue to be actuated (i.e. will click) until the
button is pressed to advance the program to the next control element.
If the secondary air injection valve does not click:
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 26, Checking secondary air injection valve

- Check Secondary Air Injection (AIR) Solenoid Valve -N112
Pa
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01-80

Actuating Secondary Air Injection (AIR) Pump
Relay -J299

Note:
Only vehicles with automatic transmission are
equipped with a secondary air injection system.
Vehicles with manual transmission do not have a
secondary air injection system. For this reason is
on vehicles with manual transmission the
following component Secondary Air Injection
(AIR) Pump Relay -J299 not displayed.

-
Press button.Output Diagnostic Test Mode Secondar
y air pump rela
y -J299

Indicated on display
If the Secondary Air Injection (AIR) Pump Motor -V101- does not run at
intervals:
Repair Manual, 2.7 Liter V6 5V BiTurbo Engine Mechanical, Engine Code(s): APB, Repair Group 26, Checking Secondary Air Injection (AIR) Pump Relay
-J299
The Secondary Air Injection (AIR) Pump Relay -J299- activates the
Secondary Air Injection (AIR) Pump Motor -V101-, which runs for
approx: 1 minute at intervals.
- Check Secondary Air Injection (AIR) Pump Relay -J299.
Pa
ge 98 of 166 Motronic s
ystem, On Board Dia
gnostic
(OBD
)
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