2016 VW Polo HVAC

   #1  

Evostar*

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can you let me know if this works for you? my 2016 polo gti isn't happy. (** Defrost flap is unplugged due to a very loud constant clicking that I cannot fix or even access) engine runs lumpy and rough since aircon problem

Code:
                Address 08: Auto HVAC       Labels: 6C0-907-044.CLB
Control Module Part Number: 6C0 907 044 A    HW: 6C0 907 044 A
  Component and/or Version: Climatronic   H02 0105
           Software Coding: 200100001011000001
            Work Shop Code: WSC 00788 648 00255
              ASAM Dataset: EV_ACClimaValeoPQ26 003001 (VW26)
                       ROD: EV_ACClimaValeoPQ26_001_SK26.rod
                      VCID: 224B5F8F35CFF89625-8076
5 Faults Found:

329989 - Motor for Defroster Flap
          B1090 54 [013] - Missing Calibration / Basic Setting
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:38:12

                    Voltage terminal 30: 14.5 V
                    Interior temperature: 32.60 ∞C
                    Outside air temperature: 25.0 ∞C
                    Defroster flap: specified value: 137
                    Defroster flap: actual value: 65535
                    Defroster flap: actual value: 0.00 %

329990 - Position Sensor for Defrost Flap Motor
          B1098 14 [013] - Open or Short to Ground
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 159
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:38:17

                    Voltage terminal 30: 14.5 V
                    Interior temperature: 32.60 ∞C
                    Outside air temperature: 25.5 ∞C
                    Defroster flap: specified value: 137
                    Defroster flap: actual value: 65535
                    Defroster flap: actual value: 0.00 %

65543 - No Basic Setting
          B2010 00 [013] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 159
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:38:12

524545 - AC Compressor First Run-In
          B109E F0 [013] - Not Performed
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 159
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:39:36

524548 - AC Compressor First Run-In
          B109E 13 [013] - Open Circuit
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Reset counter: 159
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:40:43

                    Compressor shut-off requirement: A/C off or fan control switch in 0 position
                    Compressor current: actual value: 0.665 A
                    Compressor current: specified value: 0.830 A
                    Voltage terminal 30: 14.6 V
                    Outside air temperature: 25.0 ∞C
                    Engine speed: 728 /min
 
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Uwe

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Split from this thread since a question about a 2016 Polo does not belong in a thread about a 2013 Tiguan.

-Uwe-
 
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iichel

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I'd suggest to do a basic setting of the AC motors in basic settings and see what errors return.
 
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Evostar*

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thank you Uwe.

--

thanks. I will try again this morning and give a report back.

thanks guys
 
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Evostar*

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I plugged back in the defrost flap motor plug. It’s clicking again and ran basic settings as follows.

1. reset flap motors in basic. But it ends in unknown.
2. basic auto run in setting which won’t start with error: Conditions not correct or request sequence error

engine runs rough and jumpy with no aircon selected. I’m not sure if this is a compressor problem? But I don’t even hear the compressor or fan at all.

refrigerant pressure is 6.8bar
Status of basic setting: not yet started
Compressor speed 950/min
Compressor load 0.5Nm
 
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Evostar*

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Ok. I got a step further. I changed compressor run in adaption from 120s > 0120s and it accept. Then run basic setting run in. And it started with no error. Runs for 2 mins. Result says unknown. Then ends on not running.
Then I have same errors. And back to square . but I ran a log recorder and found the run in basic setting is reporting: cancelled due to detected malfunction

so maybe this is a mechanical problem
 
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   #7  

Evostar*

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Next update. Left engine to idle. 20 mins. Came back. Redid basic test for run in. It worked!

still hvac screen flash when car is turned on...

i am considering removing the entire dash to try access the flap motor... but even then I’m not sure what I’m going to do.
Could this little flap motor be causing so much engine roughness due to a basic setting confusing hvac?

now stuck with just the 2 code.
Code:
329989 - Motor for Defroster Flap
          B1090 54 [013] - Missing Calibration / Basic Setting
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 2
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:38:12

                    Voltage terminal 30: 14.5 V
                    Interior temperature: 32.60 ∞C
                    Outside air temperature: 25.0 ∞C
                    Defroster flap: specified value: 137
                    Defroster flap: actual value: 65535
                    Defroster flap: actual value: 0.00 %

65543 - No Basic Setting
          B2010 00 [013] - -
          [New feature! Extended UDS fault detail is only supported by current gen. interfaces]
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 6
                    Fault Frequency: 2
                    Reset counter: 159
                    Mileage: 62340 km
                    Date: 2020.11.03
                    Time: 10:38:12
 
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   #8  

iichel

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Cheers for succeeding on clearing some errors.

Could you perhaps post a full scan so we can see anything else going on?
I'm not sure there is a connection between the defroster flap and the roughly running engine, but you never know...

Any speculation as to what could be the cause of these HVAC issues?
 
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   #9  

Evostar*

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Will do. : ) I'm away for work now. the car is at home I have mostly 85% of the dash removed. and will remove steering wheel etc when I get another start on this. I will try to fix the flap motor as I feel it doesn't know its positions. Seems I'm not the only one, but here is a small fix guide!
with regards to the flashing of the hvac screen is when the engine went lumpy, which I have looked online and it represents a gas issue/wrong/low pressure. iv'e had this issue re gassed now to correct level and checked for leaks. all is good. I think the correct procedure of 1. Basic Flaps. needs to be finalised for a healthy hvac environment.

seems this guy is the trouble. 6R0 907 511C (friend at VW ran my VIN/ETKA)
 
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