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VW Golf, Passat, Bora, Lupo Secret Access Codes

The speedometer has a factory built-in error to show a speed faster than your actual speed.
The Climatronic (automatic climate control) system includes a number of sensors that you
can access through the diagnostic mode. To see your true speed in digital format press the
following key combinations:

1. Press Fan Down, Temperature Colder, ECON at the same time.

2. Use the temperature control buttons to cycle through the various channels to Channel 16.
3. Press ECON to go back to normal. (It goes back automatically when you restart the car.)

a) To access the actual speed display, start your car and then on your climate control panel
press and hold-in both the Econ and Auto buttons or the Recirculation and Temperature Up
buttons. This will change your outside temperature reading to Fahrenheit.

Then press the recirculation button and at the same time press the upward pointing arrow
button above the recirculation button.

Your climate control screen will change to a different mode displaying 1c.

Use your temperature control + button to display code 17c. This is the actual speed display
feature.

Press the recirculation button again to activate the code and to display its reading in mph.

(Accessing the codes with the outside temperature reading displayed in Centigrade will
display your speed in KPH)

To revert your Climate Control to normal mode, simply press the Auto button or switch off
the ignition.

Some SEATs only display the speed in KPH whether or not Fahrenheit or Centigrade is
selected.

b) To access the actual speed code on some VW's (Passats etc) the following method
applies:

Hold-in Fan Down, Temperature Colder, ECON all at the same time. Use the + / -
temperature control buttons to view the various codes. Code 16 (sometimes 17) is the actual
speed code.

Code 16 displays the speed you are traveling at on your centre screen in KPH.

Press-in the Econ and Auto buttons together to change to MPH.

To revert the Climate Control back to the normal mode, simply press the Economy button or
switch off the ignition.

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Changing Degree Temperature Display

Press and hold the recirculation button. Then press the temperature up ("+") button to switch
between degrees Celsius & Fahrenheit on the Climate Control Temperature and Instrument
Panel Outside Temperature displays.

Accessing On-Board Diagnostic codes

Press and hold the recirculation button. Then press the manual flow control up arrow. You
should see a 1c. Press the temperature up ("+") or down ("-") buttons to select a code
number. Then press the recirculation button again. The value should display. Press the
temperature up or down button again to display another code.

NOTE: Air Flow Motor (V 71) and Potentiometer (G 113) are not installed in USA/Canada
vehicles. Disregard values displayed for these components.

Code Displayed Value

1 System malfunction - displayed as a Diagnostic Trouble Code (DTC),
2 Digital value of Interior Temperature Sensor, in Headliner (G 86)
3 Digital value of Interior Temperature Sensor, in Instrument Panel (G 56)
4 Digital value of Fresh Air Intake Duct Temperature Sensor (G 89)
5 Digital value of Outside Air (Ambient) Temperature Sensor (G 17), front
6 Digital value of Outside Air (Ambient) Temperature Sensor
7 Digital value of Ambient Temperature Sensor At Fresh Air Blower (G 109)
8 Digital value of Temperature Regulator Flap Motor Potentiometer (G 92)
9 Delta value of Temperature Regulator Flap
10 Non-corrected specified value of Temperature Regulator Flap
11 Digital value of Central Flap Motor Potentiometer (G 112)
12 Specified value of Central Flap
13 Digital value of Footwell/Defroster Flap Motor Potentiometer (G 114)
14 Specified value of Footwell/Defroster Flap
15 Digital value of Air Flow Flap Motor Potentiometer (G 113)
16 Specified value of Air Flow Flap
17 Vehicle Speed (km/h)
18 Actual Air Blower voltage (Volts)
19 Specified Fresh Air Blower voltage (Volts)
20 A/C Compressor (A/C Clutch) voltage (Volts)
21 Number of low voltage occurrences, non-transient
22 Cycle condition of A/C Refrigerant High Pressure Switch (F 118)
23 Cyclings of the A/C Refrigerant High Pressure Switch (F 118)

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24 Cyclings of the switches, absolute non-fluctuating

25 Analog/Digital value, Kick-Down Switch
26 Analog/Digital value, Engine Coolant Temperature (ECT) Warning Light
27 Coding value
28 Engine Speed (RPM)
29 A/C Compressor speed in rpm (Equals Engine Speed x 1.28)
30 Software version
31 Display check (all segments of A/C Control Head display light up)
32 Potentiometer malfunction counter, Temperature Regulator Flap
33 Potentiometer malfunction counter, Central Flap
34 Potentiometer malfunction counter, Footwell/Defroster Flap
35 Potentiometer malfunction counter, Air Flow Map
36 Feedback value, cold end-stop, Temperature Regulator Flap Motor Potentiometer (G 92)
Feedback value, hot end-stop, Temperature Regulator Flap Motor Potentiometer (G 92),
37
max. stop
38 Feedback value, cold end-stop, Central Flap Motor Potentiometer (G 112)
39 Feedback value, hot end-stop, Central Flap Motor Potentiometer (G 112)
40 Feedback value, cold end-stop, Footwell/Defroster Flap Motor Potentiometer (G114)
41 Feedback value, hot end-stop, Footwell/Defroster Flap Motor Potentiometer (G114)
42 Feedback value, cold end-stop, Air Flow Map Motor Potentiometer (G 113)
43 Feedback value, hot end-stop, Air Flow Map Motor Potentiometer (G 113)
44 Vehicle operation cycle counter
45 Calculated interior temperature (internal software, in digits)
46 Outside (ambient) temperature, filtered, for regulation (internal software)
47 Outside (ambient) temperature, unfiltered, (internal software, in deg C)
48 Outside (ambient) temperature, unfiltered, (in digits)
49 Malfunction counter for speedometer (vehicle speed) signal
50 Standing time (in minutes)
51 Engine Coolant Temperature (ECT) in deg C
Graphics channel 1 - A/C compressor switch-off conditions are identified by illuminated
52
segments of the 88.8 display.
Graphics channel 2 - Climate system electrical outputs are identified by illuminated
53
segments of the 88.8 display.
54 Control characteristics
55 Outside (ambient) temperature, in deg C or deg F depending on setting on A/C control head
56 Temperature in deg C, from Interior Temperature Sensor, in Headliner (G 86)
57 Temperature in deg C, from Interior Temperature Sensor, in Instrument Panel (G 56)
58 Temperature in deg C, from Fresh Air Intake Duct Temperature Sensor (G 89)
59 Temperature in deg C, from Outside Air (Ambient) Temperature Sensor (G 17), front
60 Temperature in deg C, from Ambient Temperature Sensor At Fresh Air Blower (G 109)

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61 Software version (latest)

Diagnostic Trouble Code Meanings

Diagnostic
Trouble
Code (Sensor) Malfunction Description
00.0 No malfunction present
02.1 (G86) Interior Temperature Sensor, in Headliner, static open, *02.1
02.2 Interior Temperature Sensor, in Headliner, static short, see 02.1
02.3 Interior Temperature Sensor, in Headliner, sporadic open
02.4 Interior Temperature Sensor, in Headliner, sporadic short
03.1 (G56) Interior Temperature Sensor, in Instrument Panel, static open, see 02.1
03.2 Interior Temperature Sensor, in Instrument Panel, static short, see 02.1
03.3 Interior Temperature Sensor, in Instrument Panel, sporadic open
03.4 Interior Temperature Sensor, in Instrument Panel, sporadic short
04.1 (G89) Fresh Air Intake Duct Temperature Sensor, static open, *04.1
04.2 Fresh Air Intake Duct Temperature Sensor, static short, see 04.1
04.3 Fresh Air Intake Duct Temperature Sensor, sporadic open
04.4 Fresh Air Intake Duct Temperature Sensor, sporadic short
05.1 (G17) Outside Air (Ambient) Temperature Sensor, front, static open, *05.1
05.2 Outside Air (Ambient) Temperature Sensor, front, static short, see 05.1, *05.2
05.3 Outside Air (Ambient) Temperature Sensor, front, sporadic open
05.4 Outside Air (Ambient) Temperature Sensor, front, sporadic short
06.1 (G110) Engine Coolant Temperature (ECT), A/C static open, *06.1
06.2 Engine Coolant Temperature (ECT), A/C static short, see 06.1
06.3 Engine Coolant Temperature (ECT), A/C sporadic open
06.4 Engine Coolant Temperature (ECT), A/C sporadic short
07.1 (G109) Ambient Temperature Sensor at Fresh Air Blower, static open, *07.1
07.2 Ambient Temperature Sensor at Fresh Air Blower, static short, see 07.1
07.3 Ambient Temperature Sensor at Fresh Air Blower, sporadic open
07.4 Ambient Temperature Sensor at Fresh Air Blower, sporadic short
08.1 (G92) Temperature Regulator Flap Motor Potentiometer, static open, *08.1
08.2 Temperature Regulator Flap Motor Potentiometer, static short, see 08.1
08.3 Temperature Regulator Flap Motor Potentiometer, sporadic open
08.4 Temperature Regulator Flap Motor Potentiometer, sporadic short
08.5 Temperature Regulator Flap, static block, *08.5
08.6 Temperature Regulator Flap Motor Potentiometer, malfunction
08.7 Temperature Regulator Flap, sporadic block
11.1 (G112) Central Flap Motor Potentiometer, static open, *11.1
11.2 Central Flap Motor Potentiometer, static short, see 11.1
11.3 Central Flap Motor Potentiometer, sporadic open
11.4 Central Flap Motor Potentiometer, sporadic short
11.5 Central Flap, static block, *11.5

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11.6 Central Flap Motor Potentiometer, malfunction

11.7 Central Flap, sporadic block
13.1 (G114) Footwell/Defroster Flap Motor Potentiometer, static open, *13.1
13.2 Footwell/Defroster Flap Motor Potentiometer, static short, see 13.1
13.3 Footwell/Defroster Flap Motor Potentiometer, sporadic open
13.4 Footwell/Defroster Flap Motor Potentiometer, sporadic short
13.5 Footwell/Defroster Flap, static block, *13.5
13.6 Footwell/Defroster Flap Motor Potentiometer, malfunction
13.7 Footwell/Defroster Flap, sporadic block
15.1 (G113) Air Flow Flap Motor Potentiometer, static open, *15.1
15.2 Air Flow Flap Motor Potentiometer, static short, see 15.1
15.3 Air Flow Flap Motor Potentiometer, sporadic open
15.4 Air Flow Flap Motor Potentiometer, sporadic short
15.5 Air Flow Flap, static block, see *15.5
15.6 Air Flow Flap Motor Potentiometer, malfunction
15.7 Air Flow Flap, sporadic block
17.0 Vehicle Speed Signal faulty
18.1 Fresh air blower voltage, static
18.3 Fresh air blower voltage, sporadic
20.1 A/C compressor voltage not OK - static, *20.1
20.3 A/C compressor voltage not OK - sporadic
22.1 (F118) A/C Refrigerant High Pressure Switch, static open, *22.1
22.3 A/C Refrigerant High Pressure Switch, sporadic open
22.5 A/C Refrigerant High Pressure Switch, 120X open, *22.5
29.1 Belt slip detection "soft", static
29.2 Belt slip detection "hard", static
29.3 Belt slip detection "soft", sporadic
29.4 Belt slip detection "hard", sporadic

Diagnostic Trouble Code Notes:

*02.1 Digital default value of 128 is programmed if sensor fails
*04.1 Value supplied by Temp. Sensor is used if sensor fails
*05.1 Value supplied by Temp. Sensor is used if sensor fails
*05.2 Digital default value of 128 is programmed if sensors G89 & G17 both fail
*06.1 Engine Coolant Temperature is calculated is sensor should fail or is not installed; diagnosis occurs only
above 0 degrees Celsius
*07.1 Programmed corrective value = 0
*08.1 Temperature Regulator Flap Motor will no longer be controlled automatically; manual adjustment only
*08.5 Motor is cycled; software attempts to eliminate block
*11.1 Central Flap Motor will no longer be controlled automatically; manual adjustment only
*11.5 Motor is cycled; software attempts to eliminate block
*13.1 Footwell/Defroster Flap Motor will no longer be controlled automatically; manual adjustment only
*13.5 Motor is cycled; software attempts to eliminate block
*15.1 Digital value is internally programmed for limp-home mode
*15.5 Motor is cycled; software attempts to eliminate block
*20.1 Compressor remains off until voltage is greater than 10.8V for at least 25 seconds
*22.1 Compressor remains off until switch closes
*22.5 Compressor re-engagement circuit, VAG 1551 Scan Tool function

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OBD Channel 52 - A/C Compressor switch-off codes

If an A/C compressor switch-off condition exists, a segment of the "88.8" display, indicated
below as an alpha-numeric code, will illuminate.

Segment Condition
a1 Slippage or blockage, A/C Refrigerant High Pressure Switch, 120x off
b1 Engine Speed (RPM) less than 200 - 500
c1 Engine Speed (RPM) greater than 6000
d1 Engine Speed (RPM) greater than 6000
e1 System function OK
f1 System function OK
a2 A/C manually switched off (A/C standby cancelled)
b2 low voltage
c2 Kick-down switch, compressor off for 12secs max.
d2 Engine Coolant Temperature (ECT) warning light switched
e2 A/C Refrigerant Low Pressure Switch (F73)
f2 A/C Refrigerant High Pressure Switch (F118)
a3 ECON mode selected
b3 OFF selected
c3 Outside (ambient) temperature too low
d3 Engine management system (compressor will remain off for 3 -12 seconds)
e3 High pressure occurrences more than 30 times
f3 Ambient Temperature Sensor at Fresh Air Blower (G109) less than 27 degF (-3 degC)
g1,g2,g3 System function OK (g1+g2+g3 must illuminate simultaneously to indicate system is OK)
Decimal Point
A/C compressor ON
Lit
Decimal Point
A/C compressor OFF
Unlit

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OBD Channel 53 - Climate system electrical output codes

When a NO system electrical output is activated, a segment of the "88.8" display, indicated
below as an alpha-numeric code, will illuminate. The decimal point in the "88.8" display will
not illuminate in this channel.

Segment Condition
a1 Fan for interior temperature sensor
b1 Fresh air/recirculation flap closed (recirculation mode)
c1 Heater valve closed
d1 Bi-directional wiring harness
e1 A/C compressor ON
f1 coolant fan first speed ON
a2 Air flow flap open
b2 Air flow flap open
c2 Air flow flap closed
d2 Footwell/Defroster flap in "Footwell" position
e2 Footwell/Defroster flap in "Footwell" position
f2 Footwell/Defroster flap in "Defroster" position
a3 Central flap in "instrument panel outlet" position
b3 Central flap in "instrument panel outlet" position
c3 Central flap in "footwell outlet/defrost" position
d3 Temperature flap in "cold air" position
e3 Temperature flap in "cold air" position
f3 Temperature flap in "warm air" position
g1,g2,g3 System function OK (g1+g2+g3 must illuminate simultaneously to indicate system is OK)

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