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A6 C6 Coolant Temperature Error

 
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brezelmann01
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Post20-11-2014, 18:31    Subject: A6 C6 Coolant Temperature Error Quote

Hello!
I have an Audi A6 (C6) here that has a problem where the coolant temperature display occasionally stops working intermittently. Sometimes it's for a day, sometimes for five days, and then it works fine again.

During the subsequent diagnostic scan, only one error code related to the engine control unit (ECU) is consistently displayed, indicating a problem within it.

Today, the error occurred directly during the reading process.

Started the engine and let it warm up. In the engine control unit (ECU), the value from sensor G62 increases steadily as expected. The instrument cluster doesn't flicker or show any abnormalities. The temperature reading on the instrument cluster displays -50°C.

So, I kept the engine running and cleared the error memory. Immediately after that, the needle on the instrument cluster jumped up.

Does anyone have any ideas? It seems like the message isn't being transmitted completely from the engine control unit to the instrument cluster.
Is the G62 sensor in the A6 not a dual-sensor?



Wednesday, October 22, 2014, 1:09:36 PM: 31703
VCDS: A Windows-based VAG/VAS emulator.
VCDS version: RKS 12.12.3.0
Data as of: 20140904.

Vehicle Identification Number (VIN): WAUZZZ4F57N159364. License plate number: [Insert license plate number here].
Mileage: 163,750 km. Repair order:

Vehicle type: 4F (4F0)
Scan: 01 02 03 05 07 08 09 0E 15 16 17 19 37 42 46 47 4F 52 53 55
56 61 62 69 72 76

Vehicle Identification Number (VIN): WAUZZZ4F57N15XXXX Mileage: 163,750 km

00-Steering angle sensor -- Status: OK 0000
01-Motor electronics -- Status: Error 0010.
02-Gearbox -- Status: OK 0000
03-Brake electronics -- Status: OK 0000
05-Access/Startup Report -- Status: OK 0000
07-Control panel/interface -- Status: OK 0000
08 - Climate Control/Heating Unit - Status: Error 0010.
09-Central Electrical System -- Status: OK.
0E-Media Player 1 -- Status: Error 0010.
15-Airbag -- Status: OK 0000
16-Wheel steering electronics -- Status: OK 0000
17-Terminal block insert -- Status: OK 0000
19-Diagnosis interface -- Status: OK 0000.
Immobilizer system -- Status: OK 0000
37-Navigation -- Status: OK 0000
42-door electric driver -- Status: OK 0000
46-Comfort System -- Status: OK 0000
47-Sound System -- Status: OK 0000
4F Main Electrical System II -- Status: OK 0000
52-door electric passenger door - Status: OK 0000.
53-Parking brake -- Status: OK 0000
55-Beam adjustment. -- Status: OK 0000.
56-Radio -- Status: OK 0000
61-Battery regulation -- Status: OK 0000
62- Door, electric, left and right -- Status: OK 0000
69 followers -- Status: OK 0000
72- Door, electric, high, right side -- Status: OK 0000
76-Parking Assist -- Status: OK 0000

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 01: Engine Control Module (ECM)
Label file: RKS\06F-907-115-AXX.lbl
Part number SW: 4F2 910 115 B, HW: 4F2 907 115.
Component: 2.0L R4/4V TFSI 0040
Revision: 56H16--- Serial number:
Encoding: 010D000302070020
Operating number: WSC 02325 758 00200
VCID: 1F484035CEC60BE6827-804A

"One error found:"
008577 - Error in the cooling system.
P2181 - 008 - Intermittent.
Freeze Frame:
Error status: 00101000
Error priority: 0.
Error frequency: 14
Lost Count: 255
Mileage: 158,243 km
Time: 0.
Date: 2014.07.10
Time: 05:56:53

Freeze Frame:
Speed: 1970 RPM.
Last: 64.7%
Speed: 114.0 km/h
Temperature: 74.0°C
Temperature: 28.0°C
Pressure: 1000.0 mbar
Voltage: 13.589 V

Readiness: 0000 0000

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 08: Climate Control/Heating. Label file: 4F0-910-043.lbl.
Part number SW: 4F0 910 043 A, HW: 4F1 820 043 AG.
Component: CLIMATE CONTROL H30 0020
Revision: 00000052 Serial Number: 00000000385619
Encoding: 0524548
Operating number: WSC 02325 758 00200
VCID: 1C327739DFD010FE675-8049

Two error codes found:
01274 - Actuator for pressure relief valve (V71).
003 - Mechanical fault.
Freeze Frame:
Error status: 01100011
Error priority: 3
Error frequency: 254
Lost Count: 192
Mileage: 150,604 km
Time: 0.
Date: 2014.02.19
Time: 10:12:36

Freeze Frame:
Voltage: 13.60 V
Temperature: 18.0°C
(no unit): 36.0
(no unit): 177.0
Temperature: 21.0°C

01314 - Engine Control Unit (ECU)
008 - implausible signal - sporadic.
Freeze Frame:
Error status: 00101000
Error priority: 3
Error frequency: 20.
Lost Count: 230
Mileage: 150,672 km
Time: 0.
Date: 2014.02.20
Time: 19:15:44

"Die Sonne scheint hell und warm. Die Vögel zwitschern fröhlich in den Bäumen. Ein leichter Wind weht durch das Feld und lässt das Gras sanft wiegen. Es ist ein wunderschöner Tag."

The sun is shining brightly and warmly. The birds are chirping happily in the trees. A gentle breeze blows through the field, causing the grass to sway softly. It's a beautiful day.
Address 0E: Media Player 1
Label file: RKS\4E0-910-111.lbl
Part number SW: 4E0 910 110 C, HW: 4E0 035 110 A.
Component: MP3 Changer H44 0350
Revision: 00044000 Serial Number: AUZ5ZBG3214911
Operating number: WSC 00000 000 00000
VCID: 183A6B292BE87CDE43D-804D

"One error found:"
02261 - Storage medium.
014 - defective - intermittent.
Freeze Frame:
Error status: 00101110
Error priority: 7
Error frequency: 1.
Lost Count: 198
Mileage: 161,782 km
Time: 0.
Date: 2014-09-01
Time: 17:39:32

Freeze Frame:
00000000

Sure, here is the translation of the text from German to English:

"End"

edit@ Car service: Log shortened, official license plate number removed icon_wink.gif.
Audi A3 Sportback [8PA], 2.0 TDI CR [CFGB], STH mit FB

[VERKAUFT] Polo 6NF 1.4TDI (AMF) mit nachgerüstetem DPF, STH+FFB, Bj. 2000, 222tkm


Translated on 13-07-2026, 21:07.
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Post20-11-2014, 22:36    Subject: A6 C6 Coolant Temperature Error Quote

If it's a dual-temperature sensor, that could be the case. Also, the instrument itself might be switched off in case of an error.

Okay, so if it's a dual-temperature sensor and very old, I would replace it. Also, check the wiring harness for any damage.
LG, Onkel BM

*Nichts ist einfacher, als sich schwierig auszudrücken......*

**Technische Fragen bitte ins Forum und nicht in mein Postfach**


Translated on 13-07-2026, 21:25.
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brezelmann01
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Post21-11-2014, 6:29    Subject: A6 C6 Coolant Temperature Error Quote

Thank you for shortening it. I completely overlooked the license plate icon_redface.gif.

So, the power supply has already been replaced, and it appears to be bipolar as expected.
Audi A3 Sportback [8PA], 2.0 TDI CR [CFGB], STH mit FB

[VERKAUFT] Polo 6NF 1.4TDI (AMF) mit nachgerüstetem DPF, STH+FFB, Bj. 2000, 222tkm


Translated on 13-07-2026, 21:25.
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