Audi/Golf 1.8T 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.

CodeDisplayed Value
1System malfunction - displayed as a Diagnostic Trouble Code (DTC), see chart below
2Digital value of Interior Temperature Sensor, in Headliner (G 86)
3Digital value of Interior Temperature Sensor, in Instrument Panel (G 56)
4Digital value of Fresh Air Intake Duct Temperature Sensor (G 89)
5Digital value of Outside Air (Ambient) Temperature Sensor (G 17), front
6Digital value of Outside Air (Ambient) Temperature Sensor
7Digital value of Ambient Temperature Sensor At Fresh Air Blower (G 109)
8Digital value of Temperature Regulator Flap Motor Potentiometer (G 92)
9Delta value of Temperature Regulator Flap
10Non-corrected specified value of Temperature Regulator Flap
11Digital value of Central Flap Motor Potentiometer (G 112)
12Specified value of Central Flap
13Digital value of Footwell/Defroster Flap Motor Potentiometer (G 114)
14Specified value of Footwell/Defroster Flap
15Digital value of Air Flow Flap Motor Potentiometer (G 113)
16Specified value of Air Flow Flap
17Vehicle Speed (km/h)
18Actual Air Blower voltage (Volts)
19Specified Fresh Air Blower voltage (Volts)
20A/C Compressor (A/C Clutch) voltage (Volts)
21Number of low voltage occurrences, non-transient
22Cycle condition of A/C Refrigerant High Pressure Switch (F 118)
23Cyclings of the A/C Refrigerant High Pressure Switch (F 118)
24Cyclings of the switches, absolute non-fluctuating
25Analog/Digital value, Kick-Down Switch
26Analog/Digital value, Engine Coolant Temperature (ECT) Warning Light
27Engine Speed (RPM)
28N/A
29A/C Compressor speed in rpm (Equals Engine Speed x 1.28)
30Software version
31N/A
32Potentiometer malfunction counter, Temperature Regulator Flap
33Potentiometer malfunction counter, Central Flap
34Potentiometer malfunction counter, Footwell/Defroster Flap
35Potentiometer malfunction counter, Air Flow Map
36Feedback value, cold end-stop, Temperature Regulator Flap Motor Potentiometer (G 92)
37Feedback value, hot end-stop, Temperature Regulator Flap Motor Potentiometer (G 92), max. stop
38Feedback value, cold end-stop, Central Flap Motor Potentiometer (G 112)
39Feedback value, hot end-stop, Central Flap Motor Potentiometer (G 112)
40Feedback value, cold end-stop, Footwell/Defroster Flap Motor Potentiometer (G114)
41Feedback value, hot end-stop, Footwell/Defroster Flap Motor Potentiometer (G114)
42Feedback value, cold end-stop, Air Flow Map Motor Potentiometer (G 113)
43Feedback value, hot end-stop, Air Flow Map Motor Potentiometer (G 113)
44Vehicle operation cycle counter
45Calculated interior temperature (internal software, in digits)
46Outside (ambient) temperature, filtered, for regulation (internal software)
47Outside (ambient) temperature, unfiltered, (internal software, in deg C)
48Outside (ambient) temperature, unfiltered, (in digits)
49Malfunction counter for speedometer (vehicle speed) signal
50Standing time (in minutes)
51Engine Coolant Temperature (ECT) in deg C
52Graphics channel 1 - A/C compressor switch-off conditions are identified by illuminated segments of the “88.8” display.  See chart below.
53Graphics channel 2 - Climate system electrical outputs are identified by illuminated segments of the “88.8” display.  See chart below.
54Control characteristics
55Outside (ambient) temperature, in deg C or deg F depending on setting on A/C control head
56Temperature in deg C, from Interior Temperature Sensor, in Headliner (G 86)
57Temperature in deg C, from Interior Temperature Sensor, in Instrument Panel (G 56)
58Temperature in deg C, from Fresh Air Intake Duct Temperature Sensor (G 89)
59Temperature in deg C, from Outside Air (Ambient) Temperature Sensor (G 17), front
60Temperature in deg C, from Ambient Temperature Sensor At Fresh Air Blower (G 109)
61Software version (latest)
86Display Check (All Segments of Climate Control display light up)



Diagnostic Trouble Code Meanings

Trouble Code (Sensor)Malfunction Description
00.0No malfunction present
02.1 (G86)Interior Temperature Sensor, in Headliner, static open, *02.1 (see below)
02.2Interior Temperature Sensor, in Headliner, static short, see 02.1
02.3Interior Temperature Sensor, in Headliner, sporadic open
02.4Interior Temperature Sensor, in Headliner, sporadic short
03.1 (G56)Interior Temperature Sensor, in Instrument Panel, static open, see 02.1
03.2Interior Temperature Sensor, in Instrument Panel, static short, see 02.1
03.3Interior Temperature Sensor, in Instrument Panel, sporadic open
03.4Interior Temperature Sensor, in Instrument Panel, sporadic short
04.1 (G89)Fresh Air Intake Duct Temperature Sensor, static open, *04.1 (see below)
04.2Fresh Air Intake Duct Temperature Sensor, static short, see 04.1
04.3Fresh Air Intake Duct Temperature Sensor, sporadic open
04.4Fresh Air Intake Duct Temperature Sensor, sporadic short
05.1 (G17)Outside Air (Ambient) Temperature Sensor, front, static open, *05.1 (see below)
05.2Outside Air (Ambient) Temp. Sensor, front, static short, see 05.1, *05.2 (see below)
05.3Outside Air (Ambient) Temperature Sensor, front, sporadic open
05.4Outside Air (Ambient) Temperature Sensor, front, sporadic short
06.1 (G110)Engine Coolant Temperature (ECT), A/C static open, *06.1 (see below)
06.2Engine Coolant Temperature (ECT), A/C static short, see 06.1
06.3Engine Coolant Temperature (ECT), A/C sporadic open
06.4Engine Coolant Temperature (ECT), A/C sporadic short
07.1 (G109)Ambient Temperature Sensor at Fresh Air Blower, static open, *07.1 (see below)
07.2Ambient Temperature Sensor at Fresh Air Blower, static short, see 07.1
07.3Ambient Temperature Sensor at Fresh Air Blower, sporadic open
07.4Ambient Temperature Sensor at Fresh Air Blower, sporadic short
08.1 (G92)Temperature Regulator Flap Motor Potentiometer, static open, *08.1 (see below)
08.2Temperature Regulator Flap Motor Potentiometer, static short, see 08.1
08.3Temperature Regulator Flap Motor Potentiometer, sporadic open
08.4Temperature Regulator Flap Motor Potentiometer, sporadic short
08.5Temperature Regulator Flap, static block, *08.5 (see below)
08.6Temperature Regulator Flap Motor Potentiometer, malfunction
08.7Temperature Regulator Flap, sporadic block
11.1 (G112)Central Flap Motor Potentiometer, static open, *11.1 (see below)
11.2Central Flap Motor Potentiometer, static short, see 11.1
11.3Central Flap Motor Potentiometer, sporadic open
11.4Central Flap Motor Potentiometer, sporadic short
11.5Central Flap, static block, *11.5 (see below)
11.6Central Flap Motor Potentiometer, malfunction
11.7Central Flap, sporadic block
13.1 (G114)Footwell/Defroster Flap Motor Potentiometer, static open, *13.1 (see below)
13.2Footwell/Defroster Flap Motor Potentiometer, static short, see 13.1
13.3Footwell/Defroster Flap Motor Potentiometer, sporadic open
13.4Footwell/Defroster Flap Motor Potentiometer, sporadic short
13.5Footwell/Defroster Flap, static block, *13.5 (see below)
13.6Footwell/Defroster Flap Motor Potentiometer, malfunction
13.7Footwell/Defroster Flap, sporadic block
15.1 (G113)Air Flow Flap Motor Potentiometer, static open, *15.1 (see below)
15.2Air Flow Flap Motor Potentiometer, static short, see 15.1
15.3Air Flow Flap Motor Potentiometer, sporadic open
15.4Air Flow Flap Motor Potentiometer, sporadic short
15.5Air Flow Flap, static block, see *15.5 (see below)
15.6Air Flow Flap Motor Potentiometer, malfunction
15.7Air Flow Flap, sporadic block
17.0Vehicle Speed Signal faulty
18.1Fresh air blower voltage, static
18.3Fresh air blower voltage, sporadic
20.1A/C compressor voltage not OK - static, *20.1 (see below)
20.3A/C compressor voltage not OK - sporadic
22.1 (F118)A/C Refrigerant High Pressure Switch, static open, *22.1 (see below)
22.3A/C Refrigerant High Pressure Switch, sporadic open
22.5A/C Refrigerant High Pressure Switch, 120X open, *22.5 (see below)
29.1Belt slip detection "soft", static
29.2Belt slip detection "hard", static
29.3Belt slip detection "soft", sporadic
29.4Belt slip detection "hard", sporadic

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

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