ESP AUDI A4 1999 B5 / 1.G AHA Engine On Board Diagnostic Workshop Manual

01-11

Notes:
If the ECM version that corresponds to the
vehicle is not displayed, replace ECM page
01
-68
. Incorrect ECM coding leads to:

Performance problems (e.g. jerky shifting,
abrupt load changes, etc.)
Increased fuel consumption
Elevated exhaust gas values
Reduction in transmission service life
Storage of non-existent malfunctions in DTC
memory
Necessary functions not being carried out
(oxygen sensor control, actuation of EVAP
canister system, etc.)

-
Press button to advance through program
sequence.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Continue as specified in procedures for specific OBD functions.
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01-20

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0130 16514 O2 Sensor Circ.,
Bank1-Sensor1
Malfunction 2
Dcy - Check Heated Oxygen Sensor (HO2S) -G39- and O2S control
(bank 1, sensor1) page 24
-22

P0131 16515 O2 Sensor Circ.,
Bank1-Sensor1
Low Voltage
P0132 16516 O2 Sensor Circ.,
Bank1-Sensor1
High Voltage
P0133 16517 O2 Sensor Circ.,
Bank1-Sensor1
Slow Response 2
Dcy - Check HO2S -G39- aging (bank 1, sensor1) page 24
-60
P0134 16518 O2 Sensor Circ.,
Bank1-Sensor1
No Activity Detected 2
Dcy - Check HO2S -G39- and O2S control (bank 1, sensor1) page
24
-22

P0136 16520 O2 Sensor Circ.,
Bank1-Sensor2
Malfunction 2
Dcy - Check Oxygen Sensor (O2S) behind Three Way Catalytic
Converter (TWC) -G130- (bank 1, sensor 2) page 24
-42

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01-21

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P0150 16534 O2 Sensor Circ.,
Bank2-Sensor1
Malfunction 2
Dcy - Check Heated Oxygen Sensor (HO2S) -G108- and Oxygen
Sensor (O2S) control (bank 2, sensor 1) page 24
-22

P0151 16535 O2 Sensor Circ.,
Bank2-Sensor1
Low Voltage
P0152 16536 O2 Sensor Circ.,
Bank2-Sensor1
High Voltage
P0153 16537 O2 Sensor Circ.,
Bank2-Sensor1
Slow Response 2
Dcy - Check HO2S -G108- aging (bank 2, sensor 1) page 24
-63
P0154 16538 O2 Sensor Circ.,
Bank2-Sensor1
No Activity Detected 2
Dcy - Check HO2S -G108- and O2S control (bank 2, sensor 1)
page 24
-22

P0156 16540 O2 Sensor Circ.,
Bank2-Sensor2
Malfunction 2
Dcy - Check O2S 2 behind Three Way Catalytic Converter (TWC) -
G131- (bank 2, sensor 2) page 24
-52

Pa
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01-58

Basic Setting (scan tool function 04)


Notes:

The specified values for the "Basic Setting" and
"Read Measuring Value Block" functions are
described in the respective component test
descriptions.
Disconnecting the battery or the Engine Control
Module (ECM) harness connector will erase all
learned values and the readiness code.
Diagnostic Trouble Code (DTC) memory,
however, will not be erased. After reconnecting
the battery and/or the ECM, the engine may idle
unevenly and there may be some temporary
loss of driveablity. If so, let the engine run at
idle for a few minutes until the learning process
has been completed.
No learning will take place if a malfunction
affecting engine regulation is stored in DTC
memory (this does not include sporadic
malfunctions).
Basic settings are established with the engine
running.
In "Basic Setting" display groups 60 or 98, with
the engine stopped and the ignition switched
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01-62

Display group 000 (display in decimal values)

Engine running at idle; ECM in "Basic Setting" function 04
Display fields
Specified
value Corresponds to
1
2
3 4
5 6
7 8
9 10
Idle learn value (additive) for O2S control, bank 2 115-141 -0.65 to +0.65
ms





Idle learn value (additive) for O2S control, bank 1
115-141


-0.65 to +0.65
ms



O2S control bank 2 (if outside of tolerance, conduct test
drive) 77-179 -10 to +10 %




O2S control bank 1 (if outside of tolerance, conduct test
drive)
77-179
-10 to +10 %


Learn value-idle air flow 118-138 -5.0 to +5.0 kg/h



Idle air control value
118-138
-5.0 to +5.0 kg/h

Throttle angle 0-12
0-5


Engine speed (with electrical consumers switched off)
All-wheel drive vehicles
Front-wheel drive vehicles

62-74
74-86

620-740 RPM
740-860 RPM

Engine load (with electrical consumers switched off) 20-50 1.0-2.5 ms
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