Audi a6 owner

I have scanned a car with vcds
1 foult

00739 coolant circulation pump (v50)
001 upper limit exeeded - intermittent.

Also bought a new heating circulation unit (HVAC) after installing blower blowed hot air for some time maybe 15 minutes. Afrer that cold air again on 90c and same foult popped out. I really dont know where else could be a problem. Help please

A6Gary

The code you list is not a diagnostic trouble code (DTC). In the readout from VCDS, you should see a SAE code, such as "P0XXX", and the corresponding VAG Code such as "YYYYY", as I noted in an earlier post. Also, the coolant circulation pump is part of the heat regulation valve unit. Even though you cleaned the solenoids, I would still recommending replacing the part with a new unit since you are seeing a problem with the coolant circulation pump V50..

Audi a6 owner

scaned a car with vcds diagnostic tool HEX-V2. How to get SAE code from hvac unit? scan report:

Tuesday,27,February,2018,16:36:27:16946
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 7 x64
VCDS Version: 17.8.1.0 (x64)
Data version: 20171130 DS276.6
www.Ross-Tech.com

VIN: WAUZZZ4F37N057545 License Plate:
Mileage: 323600km-201075mi Repair Order:

--------------------------------------------------------------------------------
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Address 01: Engine Labels: 059-907-401-ASB.clb
Control Module Part Number: 4F0 910 402 A HW: 4F0 907 401 C
Component and/or Version: 3.0L V6TDI G000AG 0020
Software Coding: 0011372
Work Shop Code: WSC 66565 257 00032
VCID: 1B35B15ADAE7F29E64-804E
1 Fault Found:

006480 - Radiator Fan (V7)
P1950 - 002 - Movement Restricted / Jammed - Intermittent
Freeze Frame:
Fault Status: 00100010
Fault Priority: 0
Fault Frequency: 30
Reset counter: 255
Mileage: 323601 km
Time Indication: 0
Date: 2018.02.27
Time: 13:05:55

Freeze Frame:
RPM: 777 /min
Torque: 54.6 Nm
Speed: 0.0 km/h
Duty Cycle: 16.2 %
Duty Cycle: 18.9 %
Duty Cycle: 16.2 %
Duty Cycle: 18.9 %

Readiness: 0 0 0 0 0
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
Address 08: Auto HVAC Labels: 4F0-910-043.clb
Control Module Part Number: 4F0 910 043 A HW: 4F2 820 043 P
Component and/or Version: KLIMABETAETIGUNGH30 0020
Software Coding: 0001300
Work Shop Code: WSC 02325 785 00200
VCID: 1C37B246DFE9F5A66D-8048
1 Fault Found:

00739 - Coolant Circulation Pump (V50)
001 - Upper Limit Exceeded
Freeze Frame:
Fault Status: 01100001
Fault Priority: 3
Fault Frequency: 3
Reset counter: 23
Mileage: 323590 km
Time Indication: 0
Date: 2018.02.23
Time: 16:24:32

Freeze Frame:
Temperature: 87.0°C

A6Gary

The above bold numbers are the VAG and SAE DTCs, respectively. Not sure why you are not seeing similar DTCs for the other identified fault. Try clearing the faults and see if they return. If they do, I would recommend replacing that valve assembly.

Audi a6 owner

Thank you for reply. Yhe foult returns every time i clean it. And i already changed all heating unit (hvac). No results. What else could couse the problem?
Another question how to calibrate flap mottors vith vcds?