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The (apparently) secret A6 climate control codes to display other info (e.g. speed or rpm)

Old 06-21-2008, 11:40 AM
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Default The (apparently) secret A6 climate control codes to display other info (e.g. speed or rpm)

It's in German I'm afraid. I've tried using Babelfish to translate it, but it's not too successful. So I figured I'd post it untranslated, maybe someone has a good translation tool.

I've marked the obviously interesting ones in red.

Wechsel in Diagnosemode: Umluft+Pfeil nach oben
Kanalnummerneingabe: +/- Temperaturwahl auf Fahrerseite, anschl. Umluft
Wechsel in Normalmode: Umluft+Pfeil nach oben

Kanal Inhalt

0 Systemfehler, siehe separate Tabelle (system error, see separate table for codes)
1 Sollwert der Gebläsespannung (Volt)
2 Istwert der Gebläsespannung (Volt)
3 Sollwert Defklappe
4 Skalierter Sollwert Defklappe
5 Skalierter Istwert Defklappe
6 Sollwert Fuss/Mananströmer-Klappe
7 Skalierter Sollwert Fuss/Mananströmer-Klappe
8 Skalierter Istwert Fuss/Mananströmer-Klappe
9 Sollwert Stauluft/Umluftklappe
10 Skalierter Sollwert Stauluft/Umluftklappe
11 Skalierter Istwert Stauluft/Umluftklappe
12 Sollwert Temperaturklappe links
13 Skalierter Sollwert Temperaturklappe links
14 Skalierter Istwert Temperaturklappe links
15 Sollwert Temperaturklappe rechts
16 Skalierter Sollwert Temperaturklappe rechts
17 Skalierter Istwert Temperaturklappe rechts
18 Fahrgeschwindgikeit (km/h) <font color="red">&lt;--- speed in km/h</font>
19 Motordrehzahl (10 U/min) <font color="red">&lt;--- rpm</font>
20 Software-Version <font color="red">&lt;---</font>
21 Audi Software-Indizierung
22 Hella Software-Indizierung
23 Codierung
24 Digitalwert Aussentemperaturfühler Stossstange in cnts
25 Aussentemperaturfühler Stossstange in °C
26 Digitalwert Aussentemperaturfühler Wasserkasten in cnts
27 Aussentemperaturfühler Wasserkasten in °C
28 Aussentemperatur für Anzeige in °C
29 Aussentemperatur für Kompressor in °C
30 Aussentemperatur für Regelung in °C
31 Verhältnis Sonne li/re bzw. re/li
32 Sonnensensor links gefiltert 10 W/m²
33 Sonnensensor rechts gefiltert 10 W/m²
34 Sonnensensor links ungefiltert 10 W/m²
35 Sonnensensor rechts ungefiltert 10 W/m²
36 Digitalwert Sollwertabsenkung als f(Sonnenintensität, Aussentemperatur)
37 Ausblastemperaturabsenkung links f(Sonnenintesität li/re) in 0,5 K
38 Ausblastemperaturabsenkung rechts f(Sonnenintesität li/re) in 0,5 K
39 Digitalwert Ausblastemperatur Mann links in cnts
40 Ausblastemperatur Mann links in °C
41 Digitalwert Ausblastemperatur Mann rechts in cnts
42 Ausblastemperatur Mann rechts in °C
43 Digitalwert Ausblastemperatur Fuss links in cnts
44 Ausblastemperatur Fuss links in °C
45 Digitalwert Ausblastemperatur Fuss rechts in cnts
46 Ausblastemperatur Fuss rechts in °C
47 Bordspannung (Klemme 15) in Volt
48 Zähler für Abschaltvorgänge Klemme 87a
49 Kompresor Abschaltbedingungen
-- 0 Kompressor läuft
-- 1 Hochdruckereignisse nichtflüchtig &gt; 120
-- 2 Hochdruckereignis
-- 3 Hochdruckereignisse flüchtig &gt; 30
-- 4
-- 5 Freonverlust
-- 6
-- 7 Spannung der Magnetkupplung &lt; 9,5V
-- 8 118°C
-- 9 Bi-Direktionale Motorschnittstelle
--10 Spannung der Magnetkupplung &lt; 10,8V
--11 Motordrehzahl &gt; 6000 U/min
--12
--13 ECON
--14 OFF
--15 Aussentemperatur &lt; -2°C
--16 Motor steht - U &lt; 200 U/min
--17 beide Aussenfühler defekt
--18 Stellglieddiagnose
--19
--20 High-Speed Low-Load
50 RCN links verzögert
51 RCN rechts verzögert
52 RCN links unverzögert
53 RCN rechts unverzögert
54 Soll Ausblastemperatur links
55 Soll Ausblastemperatur rechts
56 Standzeit
57 Errechnete Kühlmitteltemperatur in °C
58 Kühlmitteltemperatur vom Kombiinstrument in °C
59 Pull-Down Bit
60 Kaltstart Bit
61 Unterbrochener Kaltstart (Bit)
62 Zuheizer Abschaltbedingungen
-- 0 Zuheizer läuft
-- 1 Aussentemperatur &gt; 5°C
-- 2 Sollausblastemperatur links und rechts &lt; 50°
-- 3 Sollwert Temperaturklappe links und rechts &gt;
-- 4 Sollausblastemperatur links und rechts &lt; 42°
-- 5 Econ oder Off aktiv
-- 6 Sollwert Temperaturklappe links und rechts &gt;
63 Digitalwert Sonnensensor links ungefiltert in cnts
64 Digitalwert Sonnensensor recht ungefiltert in cnts
65 epsilon innen
66 innentemp_filt
67 rollierende Kompresorabschaltbedingungen (1xx aktuell)
68 Fahrzyklus-Zähler
69 epsilon_ausblas_li
70 epsilon_ausblas_re
71 rcn_filterzeit
72 Anfangswert Kühlmitteltemperatur vom Kombiinstrument +40°C
73 Hochdruckereignisse nichtflüchtig
74 i_anteil_li_xuc - 128
75 i_anteil_lre_xuc - 128
76 Hochdruckereignisse flüchtig
77 Idle-Filterung aktiv
78 Timer für Idle-Filterung Wert *50ms (Motortemp 1)
79 Filterzeit für Innenfilter Wert *12sec (Motortemp 2)
80 Verwendete Schlüsselnummer für Betriebsmodi und Solltemperatur
81 Schlüsselnummer nach 1,3 sec. nach Power-On
82 Korrigierte Schlüsselnummer (10 mal richtig empfangen)


<b><u>System failure error codes:</u></b>

Fehlerort Signalname Fehlerart
1 Innenfühler 1 Kurzschluss nach Masse
2 Sonnensensor links 2 Kurzschluss nach Masse sporadisch
3 Sonnensensor rechts 3 Unterbrechung/Schluss nach Plus
4 Unterbrechung/Schluss nach Plus sporadisch
7 Unterbrechung/Schluss nach Masse
8 Unterbrechung/Schluss nach Masse sporadisch
9 Kurzschluss nach Plus
**Kurzschluss nach Plus sporadisch

4 Aussenfühler Wasserkasten 1 Kurzschluss nach Masse
5 Aussenfühler Stossstange 2 Kurzschluss nach Masse sporadisch
6 Ausblasfühler Mann links 3 Unterbrechung/Schluss nach Plus
7 Ausblasfühler Mann rechts 4 Unterbrechung/Schluss nach Plus sporadisch
8 Motor Temp. Klappe links 5 Motor blockiert oder spannunslos
9 Motor Def. Klappe 6 Motor blockiert oder spannunslos sporadisch
10 Motor Temp. Klappe rechts
11 Motor Fuss/Mann-Klappe
12 Motor Stau/Umluftklappe

13 Poti Temp. Klappe links 1 Kurzschluss nach Masse
14 Poti Def. Klappe 2 Kurzschluss nach Masse sporadisch
15 Poti Temp. Klappe rechts 3 Unterbrechung/Schluss nach Plus
16 Poti Fuss/Mann-Klappe 4 Unterbrechung/Schluss nach Plus sporadis
17 Poti Stau/Umluftklappe **Adaptionsgrenzen überschritten
18 Belüftungsmotor

19 Schalter 2/30 bar 1 Freonverlust
2 Freonverlust sporadisch
3 Hochdruck
4 Hochdruck sporadisch

20 Ausblasfühler Fussraum 1 Kurzschluss nach Masse
2 Kurzschluss nach Masse sporadisch
3 Unterbrechung/Schluss nach Plus
4 Unterbrechung/Schluss nach Plus sporadisch

21 Kompressorspannung 7 Spannung &lt; 9,5 Volt
8 Spannung &lt; 9,5 Volt sporadisch

22 Gebläse 1 Regeldifferenz statische Abweichung
2 Regeldifferenz sporadische Abweichung

23 Tachosignal 4 Signal unplausibel sporadisch

24 Kühlmitteltemperatur-Telegr 1 Kurzschluss nach Masse
2 Kurzschluss nach Masse sporadisch
3 Unterbrechung/Schluss nach Plus
4 Unterbrechung/Schluss nach Plus sporadisch
Old 06-21-2008, 11:47 AM
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Default >>>>>>>>>>

Changes in diagnostic fashion: + Umluft top
Channel number input: + / - temperature choice on driver's side, followed by circulating air
Change in normal fashion: + Umluft top

Channel content

0 System error, see separate table (system error, see separate table for codes)
1 nominal value of the fan voltage (V)
2 actual value of the fan voltage (V)
3 setpoint Defklappe
4 Skalierter setpoint Defklappe
5 Skalierter actual Defklappe
6 setpoint Feet / Mananströmer flap
7 Skalierter setpoint Feet / Mananströmer flap
8 Skalierter actual Feet / Mananströmer flap
9 setpoint air dam / Umluftklappe
10 Skalierter setpoint air dam / Umluftklappe
11 Skalierter congestion actual air / Umluftklappe
12 setpoint temperature left flap
13 Skalierter setpoint temperature left flap
14 Skalierter actual temperature left flap
15 setpoint temperature right flap
16 Skalierter setpoint temperature right flap
17 Skalierter actual temperature right flap
18 Fahrgeschwindgikeit (km / h) &lt;--- speed in km / h
19 engine speed (10 rpm) &lt;--- rpm
20 software version &lt;---
21 Audi indexing software
22 Hella indexing software
23 coding
24 Digital value outside temperature sensor Stossstange in cnts
25 outdoor temperature sensor Stossstange in ° C
26 digital value outside temperature sensor water tank in cnts
27 outdoor temperature sensor water tank in ° C
28 for display outside temperature in ° C
29 for compressor outside temperature in ° C
30 rules for outside temperature in ° C
31 Relation sun li / re / re / li
32 sun-filtered sensor left 10 W / m
33 sun-filtered right sensor 10 W / m
34 solar sensor left unfiltered 10 W / m
35 solar sensor right unfiltered 10 W / m
36 Digital setpoint value reduction as f (solar intensity, outdoor temperature)
37 Ausblastemperaturabsenkung left f (Sonnenintesität li / re) in 0.5 K
38 Ausblastemperaturabsenkung right f (Sonnenintesität li / re) in 0.5 K
39 digital value outlet man left cnts
40 outlet man left in ° C
41 digital value outlet right man cnts
42 outlet right man in ° C
43 digital value left foot outlet cnts
44 outlet left foot in ° C
45 digital value right foot outlet cnts
46 outlet right foot in ° C
47 board voltage (terminal 15) in volts
48 meters for Abschaltvorgänge terminal 87a
49 Kompresor Abschaltbedingungen
-- 0 compressor runs
-- 1 non-high-pressure events&gt; 120
-- 2 high-pressure event
-- 3 high-pressure transient events&gt; 30
-- 4
-- 5 Freonverlust
-- 6
-- 7 tension of the magnetic clutch &lt;9.5 V
-- 8 118 ° C
-- 9 bi-directional interface engine
-- 10 tension of the magnetic clutch &lt;10.8 V
-- 11 engine speed&gt; 6000 rpm
-- 12
-- 13 ECON
-- 14 OFF
-- 15 outside temperature &lt;-2 ° C
-- 16 engine is - U &lt;200 rpm
-- 17 both external sensor defective
-- 18 actuator diagnosis
-- 19
-- 20 high-speed low-load
50 RCN left delayed
51 RCN right delayed
52 RCN left unverzögert
53 RCN right unverzögert
If left 54 outlet
55 Should the right outlet
56 life
57 Calculated coolant temperature in ° C
58 coolant temperature of the combined instrument in ° C
59 pull-down bit
60 bit cold start
61 Interrupted cold start (bit)
62 Zuheizer Abschaltbedingungen
-- 0 runs Zuheizer
-- 1 outside temperature&gt; 5 ° C
-- 2 Sollausblastemperatur left and right &lt;50 °
-- 3 setpoint temperature door left and right&gt;
-- 4 Sollausblastemperatur left and right &lt;42 °
-- 5 Econ or actively Off
-- 6 setpoint temperature door left and right&gt;
63 digital value solar sensor in the left unfiltered cnts
64 Digital value solar sensor in quite unfiltered cnts
65 Epsilon inside
66 innentemp_filt
67 rolling Kompresorabschaltbedingungen (1xx current)
68-meter driving cycle
69 epsilon_ausblas_li
70 epsilon_ausblas_re
71 rcn_filterzeit
72 initial value coolant temperature of the combined instrument +40 ° C
73 non-high-pressure events
74 i_anteil_li_xuc - 128
75 i_anteil_lre_xuc - 128
76 high-pressure transient events
Idle 77 active filtering
78 Timer Idle filtering value * 50ms (motor Temp 1)
79 filter time for internal filter value * 12sec (motor Temp 2)
80 key number used for operating modes and set temperature
81 key point to 1.3 seconds after power-on
Corrected 82 key number (10 times correctly receiving)


Failure system error codes:

Signal fault error
1 internal probe 1 short-circuit to ground
2 sun sensor 2 left short-circuit to ground sporadically
3 Solar sensor break right 3 / conclusion after Plus
4 interruption / conclusion after sporadic Plus
7 interruption / conclusion after mass
8 interruption / conclusion after mass sporadically
9 Plus to short-circuit
** Short-circuit after sporadic Plus

4 outdoor water tank sensor 1 short-circuit to ground
5 external probe Stossstange 2 short-circuit to ground sporadically
6 Ausblasfühler man left 3 interruption / conclusion after Plus
7 Ausblasfühler right man break 4 / conclusion after sporadic Plus
8 engine temp left flap 5 Motor blocked or spannunslos
9 Motor Def flap 6 engine block or sporadic spannunslos
10 Motor Temp right flap
11 foot motor / man-flap
12 motor Jam / Umluftklappe

13 Poti Temp flap links 1 short-circuit to ground
14 Poti Def flap 2 short-circuit to ground sporadically
15 Poti Temp valve break right 3 / conclusion after Plus
16 Poti foot / man-door 4 interruption / conclusion after Plus sporadis
17 Poti Jam / ** Umluftklappe adaptation limits
18 ventilation motor

19 switch 2 / 30 bar 1 Freonverlust
2 Freonverlust sporadically
3 High Pressure
4 High pressure sporadically

20 Ausblasfühler foot room 1 short-circuit to ground
2 short-circuit to ground sporadically
3 interruption / conclusion after Plus
4 interruption / conclusion after sporadic Plus

21 compressor voltage 7 voltage &lt;9.5 volts
8 Power &lt;9.5 volts sporadically

22 Blower 1 rule difference static deviation
2 Rule difference sporadic deviation

23 tachometer signal 4 signal implausible sporadically

24 coolant temperature Telegr-1 short-circuit to ground
2 short-circuit to ground sporadically
3 interruption / conclusion after Plus
4 interruption / conclusion after sporadic Plus
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Migel Petrovith (12-26-2019)
Old 06-21-2008, 04:56 PM
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Default what does all of this mean?

I'm not following..

codes for what?
Old 06-21-2008, 05:21 PM
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Default These codes are accessible through the climate control....

They have all been documented (more or less) on AW, just search and check the tech section. They tell a variety of information, much of which can be obtain through simpler/more direct means.
Old 06-21-2008, 05:28 PM
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Default Here's the simpler and direct means =) (REPOST)

Thanks to Stoney's link.

The way to get there is quite simple. Press the recirculate button, keep it in, and simultaneously press the "up arrow" vent control. This will cause both the temperature displays to change to 0 and 00.

Now by pressing the left temperature control, the left display will change up to 1 on the first press. Keep going until you reach 18 or 19. Now press the recirculate button again, and the 2 temp displays will be converted into a digital rev counter on 18 or a digital speedometer on 19.

Apart from that, there are close on 80 other codes and displays that you can call up, and I would like to know if anybody out there can possibly give me the explanation on what some of the other codes mean.
Old 06-21-2008, 06:28 PM
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Default I don't think they are there to be found on AW, these are the A6 codes I've posted

The other ones that can be found are for something else it seems.
Old 06-21-2008, 06:32 PM
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Default That's not a simpler and direct means, that's the exact same method

I thought I'd start a new thread because that earlier one only mentioned two codes (18 and 19) and the stoney links also left things open asking if anyone knows any more codes. Somebody had posted a link to a tech article with a bunch of codes (maybe 30 or so), but they were different (18 and 19 were not speed/rpm) and incomplete.

I figured that now I'd got the complete list it was worth a new thread. I think the "simpler and direct means" that computrtutr mentioned, was simply looking at the speedometer
Old 06-21-2008, 08:14 PM
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^^Simpler for me - it's written in English =)
Old 01-15-2009, 01:02 PM
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Default Re: The (apparently) secret A6 climate control codes to display other info (e.g. speed or rpm)

what are default numbers for these codes. mine is all messed up.
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