Audi 80-200 OBD2 Diagnostic Fault Codes. Software Tools

Audi 80-200 car diagnostics, troubleshooting, error codes and their interpretation. Engine, transmission errors. Error codes can be downloaded for free in PDF format

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AUDI 80-90 B3 (1986-1991)

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Diagnosis_Fault Memory 20v from 03_90_Download

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Diagnosis_Fault Memory 20v to 03_90_Download

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Diagnosis_Fault Memory 4 cyl_Download

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Diagnosis_Fault Memory 5 cyl_Download

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Ignition_System 4 and 5 cyl_Download

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Ignition_System_20v from 03_90_Download

Audi 80-90_B3 Service_manual – Fault Memory Ignition – Ignition_System_20v to 03_90_Download

AUDI 100 200 SELF-DIAGNOSIS

Audi 100_C4 Automatic_gearbox 01N Self-diagnosis_Download

Audi 100_C4 Automatic_gearbox 018 Self-diagnosis_Download

Audi 100_C4 Automatic_gearbox 097 Self-diagnosis_Download

Audi 100_C4 Running_gear, Self-diagnosis_Download

Audi 100_200 Diagnosis_Fault Memory_Download

Audi 100_200 Diagnosis_Fault Memory (Engine_Code NF with_CIS-E III)_Download

Audi 100_200 Diagnosis_Fault Memory (Engine Code 3B)_Download

Audi 100_200 On-Board_Diagnostic (OBD)_Download

Audi 100_200 Diagnosis_Fault Memory (Troubleshooting)_Download

Access to on-board diagnostic codes

Press and hold the “recycle” button. Then press the manual up arrow to control the flow of data. You should see 1c. Press the temperature (“+”) or down (“-“) buttons to select the code number. Then press the “recycle” button again. The value should be displayed. Press the temperature or down buttons again to display another code.

PLEASE NOTE: Air Flow Motor (V 71) and Potentiometer (G 113) are not installed in US / CANADA vehicles. Ignore values displayed for these components

Diagnostic codes on the climate

on channel 01

00.0 No fault

02.1-02.4 Temperature sensor in the ceiling

03.1-03.4 Temperature sensor in the dashboard

04.1-04.4 Outdoor air intake temperature sensor.

05.1-05.4 Temperature sensor on the front of the machine

06.1-06.4 (ECT) Engine coolant temperature sensor

07.1-07.4 Thermistor for turning on the engine cooling fan

08.1-08.7 (1) Damper control potentiometer

11-1-11.7 (1) Center damper control potentiometer

13.1-13.7 (1) Foot flap control potentiometer

15.1-15.7 Air damper control potentiometer

17.0 Speed sensor

18.1-18.3 Outside air fan (Incorrect voltage)

20.1-20.3 (2) Compressor clutch (Wrong voltage)

22.1-22.5 (3) Coolant high pressure valve

29.1-29.4 Compressor belt slip

(1) – The drive cannot be controlled automatically.

(2) – Residual operation of the compressor clutch until the voltage is greater than 10.8 V for 25 seconds.

(3) – Residual operation of the clutch until the valve closes.

TABLE OF DIAGNOSIS CHANNELS

Channel Function

1 Fault in the system, displayed as a fault code

2 Digital value of the temperature sensor in the cabin (plafond)

3 Digital value of the temperature sensor in the cabin (torpedo)

4 Numerical value of the outdoor air inlet temperature sensor

5 External temperature sensor digital value (front panel)

6 Digital value of the external temperature sensor

7 Digital value of the ambient air temperature sensor in the outdoor air intake fan

8 Digital value of thermostatic damper motor potentiometer

9 Triangular value of thermostatic damper

10 Uncorrected thermostat damper setpoint

11 Digital value of the central damper motor potentiometer

12 Central damper setpoint

13 Digital value of foot flap motor potentiometer

14 Foot flap set value

15 Digital value of air damper motor potentiometer

16 Air flow damper set value

17 Vehicle speed (km/h)

18 Actual voltage of the outdoor air intake fan

19 Specified outdoor air intake fan voltage

20 Compressor clutch voltage

21 Number of step down voltage (non-transient)

22 Compressor refrigerant high pressure valve status

23 Compressor refrigerant high pressure valve cycling

24 Cyclic operation of valves – switches

25 Downshift mechanism (A/D value)

26 Engine Coolant Temperature (ECT) (Sensor Warning Analog / Digital Value)

27 Programming values

28 Engine speed (rpm)

29 Compressor clutch speed (rpm) (equals engine speed x 1.28)

30 Software version

31 Test segments of the display (all segments of the air conditioner control panel light up)

32 Thermostat damper potentiometer failure counter

33 Center damper potentiometer failure counter

34 Foot flap potentiometer failure counter

35 Air flow damper potentiometer failure counter

36 Thermostat damper motor potentiometer feedback value (cold side travel limiter)

37 Thermostat damper motor potentiometer feedback value (hot travel limiter)

38 Feedback value of damper motor potentiometer (cold side travel limiter)

39 Damper motor potentiometer feedback value (hot end limiter)

40 Feedback value of the foot flap motor potentiometer (cold travel limiter)

41 Foot flap motor potentiometer feedback value (hot side limiter)

42 Feedback value of the damper motor potentiometer (cold side travel limiter)

43 Feedback value of damper motor potentiometer (hot side limiter)

44 Duty cycle counter

45 Estimated internal temperature in figures (internal software)

46 Outside temperature, filtered for regulation

(internal software)

47 Outside temperature, unfiltered in degrees .C

(internal software)

48 Outside temperature, unfiltered in numbers

49 Fault counter for speedometer signal (vehicle speed)

50 Simple (in protocol)

51 Engine coolant temperature (ECT) in degrees .C

52 (1) Graphic channel number 1 to 88.8

53 (1) Graphic channel number 1 to 88.8

54 Control characteristics

55 Ambient temperature in (.F or .C) depending on the installation of the air conditioner control panel

56 Indications of the temperature sensor in the cabin in degrees (plafond)

57 Indications of the temperature sensor in the cabin in degrees (torpedo)

58 Readings of the temperature sensor in the duct in degrees

59 Front temperature sensor reading in degrees

60 Readings of the ambient air temperature sensor in the air intake of the outdoor fan in degrees

61 Software (latest) version

Changing Degree Temperature Display