Stop Valve for Coolant for Climatronic (N422) Open or Short to Ground

   #1  

MichaelB8.5

Verified VCDS User
Verified
Joined
Apr 8, 2026
Messages
3
Reaction score
1
Location
Birmingham, UK
VCDS Serial number
C?ID=644228
Have an A4 2014 1.8CJEB Manual, which I picked up ~9 months back. Came with no air con and had rough idling but still a good price.
Had it scanned back then and sorted the idle issue with the camshaft adjustment magnet.
Now sorted myself out with VCDS as its make sence in the long run, so forgive me if I have missed something obvious.

Not sure if they used VCDS or another tool but it logged this:
VAG03220: Climatronic Refrigerant shut off valve open circuit/Short to ground static

I have since scanned and have the following:

15455 - Thermostat for Transmission
P19A0 00 [00101111] - Short to Plus

03220 - Stop Valve for Coolant for Climatronic (N422)
009 - Open or Short to Ground

0457 - Central Electronics Control Module / BCM (J519)
013 - Check DTC Memory

0256 - A/C Pressure/Temperature Sensor (G395)
008 - Implausible Signal

looking in to (03220) I see the code linked to Coolant Blocking / Solenoid Valve 4H0121671B/D faulting and leaking coolant in to the wiring that by the gear box on the left side/UK passenger side.
I have checked and I have the updated 4H0121671D part and the plug and connector look dry and clean.
I have seen (15455) also related to the same part.

Now I have found two of the valve’s, one by the gear box and one in the plenum chamber. Is there a way to identify which valve is ID’ed as N422 or are they both called that?

Can the part fail without leaking coolant past the connector and still cause the same issue?
Is there anything else I should try and test

Code:
hassis Type: 8K-AU48 (8R0)
Scan: 01 03 05 08 09 15 16 17 19 42 44 46 52 53 56 5F 62 6D 72

VIN: WAUZZZ8K8EA105469   Mileage: 159500km-99108miles

01-Engine -- Status: Malfunction 0010
03-ABS Brakes -- Status: Malfunction 0010
04-Steering Angle -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
08-Auto HVAC -- Status: Malfunction 0010
09-Cent. Elect. -- Status: Malfunction 0010
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: Malfunction 0010
42-Door Elect, Driver -- Status: OK 0000
44-Steering Assist -- Status: Malfunction 0010
46-Central Conv. -- Status: Malfunction 0010
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
56-Radio -- Status: Cannot be reached 1100
5F-Information Electr. -- Status: Cannot be reached 1100
62-Door, Rear Left -- Status: OK 0000
6D-Trunk Elect. -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
-------------------------------------------------------------------------------
Address 01: Engine (J623-CJEB)       Labels:. 06L-906-264-CJE.clb
   Part No SW: 8K0 906 264 A    HW: 8K0 906 264 
   Component: 1.8l R4 TFSI  H09 0004  
   Revision: --H09---    CVN: 3315C716
   Coding: 12190032242501022000
   Shop #: WSC 06208 000 00000
   ASAM Dataset: EV_ECM18TFS0218K0906264A 001004
   ROD: EV_ECM18TFS0218K0906264A.rod
   VCID: 2F3CF003B79DAAE2271-807A
   VINID: 9D196AAAA21B21544100510624074C771D

5 Faults Found:
15455 - Thermostat for Transmission 
          P19A0 00 [00101111] - Short to Plus
          Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 2
                    Fault Frequency: 199
                    Mileage: 155380 km
                    Date: 2025.09.13
                    Time: 17:04:54

                    Engine speed: 1259.75 /min
                    Normed load value: 17.3 %
                    Vehicle speed: 0 km/h
                    Coolant temperature: 12 °C
                    Intake air temperature: 13 °C
                    Ambient air pressure: 980 mbar
                    Voltage terminal 30: 11.347 V
                    Unlearning counter according OBD: 40
                    Engine: operating status: IS
                    STATE_LS_SAE[1]: OL_CDN
                    T_AST_SAE: 1 s
                    MAP_MES_SAE: 56 kPa
                    Lambda probe voltage: bank 1: probe 1 (broadband probe): 2.041 V
                    FAC_TPS_1_SAE: 16.796875 %
                    FUP_H_SAE: 6350.0 kPa

15074 - Cylinder Disabling 
          P130A 00 [01100000] - -
          Intermittent - Not Confirmed - Tested Since Memory Clear

15077 - Idle Control System RPM 
          P0507 00 [01100000] - Higher than Expected.
          Intermittent - Not Confirmed - Tested Since Memory Clear

15131 - Cylinder 3 
          P0303 00 [01100000] - Misfire Detected
          Intermittent - Not Confirmed - Tested Since Memory Clear

14916 - Catalyst System; Bank 1 
          P0420 00 [01100000] - Efficiency Below Threshold
          Intermittent - Not Confirmed - Tested Since Memory Clear

Readiness: 0000 0000

-------------------------------------------------------------------------------
Address 03: ABS Brakes (J104)       Labels:. 8K0-907-379-V2.clb
   Part No SW: 8K0 907 379 CL    HW: 8K0 907 379 CL
   Component: ESP8 front    H09 0020  
   Revision: --------    Serial number: --------------
   Coding: 03154401
   Shop #: WSC 06335 000 00000
   VCID: 055072AB4521C0B2BDD-8050

2 Faults Found:
01486 - System Function Test Activated 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 4
                    Fault Frequency: 1
                    Reset counter: 15
                    Mileage: 159502 km
                    Time Indication: 0
                    Date: 2026.04.04
                    Time: 16:23:39

             Freeze Frame:
                    Hex Value: 0x0000
                    Hex Value: 0x0702
                    Hex Value: 0x0014
                    Hex Value: 0x318E
                    Hex Value: 0x0000

00473 - Control Module for Elect. Park/Hand Brake (J540) 
            013 - Check DTC Memory
             Freeze Frame:
                    Fault Status: 01101101
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 15
                    Mileage: 159502 km
                    Time Indication: 0
                    Date: 2026.04.04
                    Time: 16:53:34

             Freeze Frame:
                    Hex Value: 0x0000
                    Hex Value: 0x0282
                    Hex Value: 0x0015
                    Hex Value: 0x028E
                    Hex Value: 0x0000


-------------------------------------------------------------------------------
Address 05: Acc/Start Auth. (J393)       Labels:. 8K0-907-064-05.clb
   Part No SW: 8K0 907 064 JG    HW: 8K0 907 064 JG
   Component: BCM2 2.0      H14 0650  
   Revision: 00002001    
   Coding: 03B24040000000000000
   Shop #: WSC 06335 000 00000
   VCID: 7EA21D4720F7936AFC7-802A

   Subsystem 1 - Part No SW: 8K0 959 754 H    HW: 8K0 959 754 H
   Component: FBSAUDIB8 IDG  H71 0083 
   Serial number: 0814000008769006    

   Subsystem 2 - Part No SW: 8K0 905 852 E    HW: 8K0 905 852 E
   Component: J764 ELV MLB  H40 0046 
   Serial number: 0213000398228004    

No fault code found.

-------------------------------------------------------------------------------
Address 08: Auto HVAC (J255)       Labels:. 8Kx-820-043-3Z.clb
   Part No SW: 8K2 820 043 T    HW: 8K2 820 043 T
   Component: KLIMA 3 ZONEN H04 0121  
   Revision: D1000000    Serial number: 01240120140528
   Coding: 642402C000
   Shop #: WSC 06335 000 00000
   VCID: 3A2AD1577C5F7F4A80F-806E

3 Faults Found:
03220 - Stop Valve for Coolant for Climatronic (N422) 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 3
                    Fault Frequency: 1
                    Reset counter: 181
                    Mileage: 154550 km
                    Time Indication: 0
                    Date: 2025.08.18
                    Time: 11:28:04

00457 - Central Electronics Control Module / BCM (J519) 
            013 - Check DTC Memory
             Freeze Frame:
                    Fault Status: 01101101
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 194
                    Mileage: 158623 km
                    Time Indication: 0
                    Date: 2026.02.01
                    Time: 16:53:05

00256 - A/C Pressure/Temperature Sensor (G395) 
            008 - Implausible Signal
             Freeze Frame:
                    Fault Status: 01101000
                    Fault Priority: 7
                    Fault Frequency: 1
                    Reset counter: 194
                    Mileage: 158623 km
                    Time Indication: 0
                    Date: 2026.02.01
                    Time: 16:53:05

             Freeze Frame:
                    Temperature: 10.0°C


-------------------------------------------------------------------------------
Address 09: Cent. Elect. (J519)       Labels:. 8K0-907-063.clb
   Part No SW: 8K0 907 063 DD    HW: 8K0 907 063 DD
   Component: BCM1 1.0      H16 0103  
   Revision: 04016001    Serial number: 00000052770901
   Coding: 290000308034A7C00081000300001F1F001D060827080201000008004000020000000024000000
   Shop #: WSC 06335 000 00000
   VCID: 74B63F6F1EBBC93A9A3-8020

   Subsystem 1 - Part No SW: 8K2 955 119 A    HW: 8T2 955 119   Labels: 1KX-955-119.CLB
   Component: WWS 150114  H06 0080 
   Serial number: SWF14010155265      
   Coding: 00FD11

   Subsystem 2 - Part No SW: 8U0 955 559 B    HW: 8U0 955 559 B  Labels: 8U0-955-559.CLB
   Component: G397_RLFS  H06 0002 
   Serial number: 22147993            
   Coding: 02005D

   Subsystem 3 - Part No SW: 8K0 941 531 AS    HW: 8K0 941 531 AS
   Component: E1 - LDS  H03 0031 
   Serial number: 00000000001001140897

   Subsystem 4 - Part No SW: 4H0 907 658     HW: 4H0 907 658 
   Component: AQ_Hum_Sensor  H03 0003 
   Serial number: 5EC88A07000000000001

1 Fault Found:
00256 - A/C Pressure/Temperature Sensor (G395) 
            004 - No Signal/Communication
             Freeze Frame:
                    Fault Status: 01100100
                    Fault Priority: 3
                    Fault Frequency: 18
                    Reset counter: 203
                    Mileage: 158683 km
                    Time Indication: 0
                    Date: 2026.02.08
                    Time: 12:54:43


-------------------------------------------------------------------------------
Address 15: Airbags (J234)       Labels:| 8K0-959-655.clb
   Part No SW: 8K0 959 655 N    HW: 8K0 959 655 N
   Component: AirbagVW-AU10 H47 0610  
   Serial number: 003KFDB3T109   Dataset Number: 8K0909602Q  0001
   Coding: 30534435363030303030554A3052384B3053
   Shop #: WSC 61983 001 1048576
   ASAM Dataset: EV_AirbaECUVWAUDI010 003010
   ROD: EV_AirbaECUVWAUDI010_003_AU48.rod
   VCID: 48CEBB9F32331DDA06B-801C

   Crash sensor for side airbag: driver side: 
   Serial number: 6334MSME410B292CE

   Crash sensor for side airbag: passenger side: 
   Serial number: 6344MSME4C3D467D-

   Rear Side Airbag Crash Sensor (on driver's side): 
   Serial number: 6352QSME7C3B2146N

   Passenger side rear thorax airbag crash sensor: 
   Serial number: 6362QSME583C2758S

   Crash sensor for front airbag: driver side: 
   Serial number: 63732SME273C245C3

   Crash sensor for front airbag: passenger side: 
   Serial number: 63832SME203C0A48$

No fault code found.

-------------------------------------------------------------------------------
Address 16: Steering wheel (J527)       Labels:. 8K0-953-568.clb
   Part No SW: 8K0 953 568 Q    HW: 8K0 953 568 Q
   Component: Lenks.Modul   H03 0003  
   Revision: C0062331    Serial number: 90862NAK0004O 
   Coding: 000017
   Shop #: WSC 06335 000 00000
   VCID: 48CEBB9F32B31DDA06B-801C

   Component: E221 - MFL  H03 0004 

No fault code found.

-------------------------------------------------------------------------------
Address 17: Instruments (J285)       Labels:. 8T0-920-xxx-17.clb
   Part No SW: 8K0 920 983 E    HW: 8K0 920 983 E
   Component: KOMBIINSTR.   H35 0564  
   Revision: 00100000    Serial number: ZA970881F     
   Coding: 33A4100002012600010000
   Shop #: WSC 06335 000 00000
   VCID: 372CC8634F4D62227F1-8062

No fault code found.

-------------------------------------------------------------------------------
Address 19: CAN Gateway (J533)       Labels:. 8T0-907-468.clb
   Part No SW: 8R0 907 468 N    HW: 8R0 907 468 C
   Component: GW-BEM 4CAN-M H11 0060  
   Revision: 1Y080030    Serial number: 3041Y1411302ED
   Coding: 80CF07FF00
   Shop #: WSC 06335 000 00000
   VCID: 4ACA81972CBFEFCA10F-801E

   Subsystem 1 - Part No SW: 8T0 915 181     HW: 8T0 915 181 
   Component: J367-BDMHella  H03 8041 
   Serial number: 7304372103          

   Subsystem 2 - Part No SW: 8K0 959 663     HW: 8K0 959 663 
   Component: J532_DCDCStab  H17 0042 
   Serial number: 14016002181011200181

1 Fault Found:
03041 - Energy Management Active 
            000 - -
             Freeze Frame:
                    Fault Status: 01100000
                    Fault Priority: 7
                    Fault Frequency: 51
                    Reset counter: 15
                    Mileage: 158303 km
                    Time Indication: 0
                    Date: 2026.01.02
                    Time: 15:23:05

             Freeze Frame:
                    Bin. Bits:    10000
                    Voltage: 12.00 V
                    Count: 10


-------------------------------------------------------------------------------
Address 42: Door Elect, Driver (J386)       Labels:. 8K0-959-793.clb
   Part No SW: 8K0 959 793 S    HW: 8K0 959 793 Q
   Component: TSG FA        H02 0510  
   Revision:             Serial number: 0000086971925 
   Coding: 011002204001410001
   Shop #: WSC 06335 000 00000
   VCID: 50FE93FFCAE3D51A5EB-8004

No fault code found.

-------------------------------------------------------------------------------
Address 44: Steering Assist (J500)       Labels:| 8K0-909-144.clb
   Part No SW: 8K0 909 144 G    HW: 8K0 909 144 B
   Component: RCEPS         H40 0508  
   Revision: 00001000    Serial number: 0007190740 Dataset Number: 8K0909852J  0024
   Coding: 100000000001
   Shop #: WSC 06334 000 00000
   ASAM Dataset: EV_RCEPSAU48X 008015
   ROD: EV_RCEPSAU48X_008.rod
   VCID: 3530C26B55C190326DD-8060

1 Fault Found:
2305 - Function Restriction due to Start Voltage Interruption 
          U1410 00 [00001000] - -
          [Funktionseinschränkung der Lenkung durch Spannungseinbruch bei niedriger Geschwindigkeit]
          Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Priority: 6
                    Fault Frequency: 1
                    Reset counter: 32
                    Mileage: 159230 km
                    Date: 2026.03.18
                    Time: 20:40:02

                    2048.00 /min


-------------------------------------------------------------------------------
Address 46: Central Conv. (J393)       Labels:. 8K0-907-064-46.clb
   Part No SW: 8K0 907 064 JG    HW: 8K0 907 064 JG
   Component: BCM2 2.0      H14 0650  
   Revision: 00002001    Serial number: 0324345672    
   Coding: 013B0622A0B930408330023680000047
   Shop #: WSC 06335 000 00000
   VCID: 7EA21D4720F7936AFC7-802A

   Subsystem 1 - Part No: 8K0 951 177 
   Component: DWA-Sensor  H02 0040 

   Subsystem 2 - Part No: 1K0 951 605 C
   Component: LIN BACKUP HO  H05 1501 

2 Faults Found:
02615 - Fuel Tank Cap; Lock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 13
                    Reset counter: 234
                    Mileage: 156493 km
                    Time Indication: 0
                    Date: 2025.10.26
                    Time: 13:33:03

02616 - Fuel Tank Cap; Unlock 
            009 - Open or Short to Ground
             Freeze Frame:
                    Fault Status: 01101001
                    Fault Priority: 2
                    Fault Frequency: 10
                    Reset counter: 231
                    Mileage: 156563 km
                    Time Indication: 0
                    Date: 2025.10.27
                    Time: 18:05:49


-------------------------------------------------------------------------------
Address 52: Door Elect, Pass. (J387)       Labels:. 8K0-959-792.clb
   Part No SW: 8K0 959 792 S    HW: 8K0 959 792 Q
   Component: TSG BF        H02 0510  
   Revision:             Serial number: 0000132681848 
   Coding: 011002204001410001
   Shop #: WSC 06325 000 00000
   VCID: 4FFC9083D7DDCAE2471-801A

No fault code found.

-------------------------------------------------------------------------------
Address 53: Parking Brake (----)       Labels: 8K0-907-801-V2.clb
   Part No SW: 8K0 907 801 M    HW: 8K0 907 801 J
   Component: EPB-4         H01 0004  
   Revision: --------    Serial number: 20000000385110
   ASAM Dataset: EV_ParkiBrake 001028
   ROD: EV_ParkiBrake_AU48.rod
   VCID: 3928CE5B79D97452895-806C

No fault code found.

-------------------------------------------------------------------------------
Address 56: Radio
Cannot be reached

-------------------------------------------------------------------------------
Address 5F: Information Electr.
Cannot be reached

-------------------------------------------------------------------------------
Address 62: Door, Rear Left (J388)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 G    HW: 8K0 959 795 D
   Component: TSG HL        H01 0510  
   Revision:             Serial number: 0000094756202 
   Coding: 010002204001210001
   Shop #: WSC 06335 000 00000
   VCID: 46D2B5A738A70BAAF47-8012

No fault code found.

-------------------------------------------------------------------------------
Address 6D: Trunk Elect. (J605)       Labels: 8K9-827-851.clb
   Part No SW: 8K9 827 851 C    HW: 8K9 827 851 C
   Component: J605  Master  H53 0330  
   Revision: --------    Serial number: 8K9827851C    
   VCID: 3E22DD476077536ABC7-806A

   Subsystem 1 - Part No SW: 8K9 827 852 C    HW: 8K9 827 852 C
   Component: J756  Slave  H53 0330 
   Serial number: 8K9827852C          

No fault code found.

-------------------------------------------------------------------------------
Address 72: Door, Rear Right (J389)       Labels:. 8K0-959-795.clb
   Part No SW: 8K0 959 795 G    HW: 8K0 959 795 D
   Component: TSG HR        H01 0510  
   Revision:             Serial number: 0000087755689 
   Coding: 010002204001210001
   Shop #: WSC 06335 000 00000
   VCID: 46D2B5A738A70BAAF47-8012

No fault code found.

End----(Elapsed Time: 01:32, VBatt start/end: 11.3V/11.3V. VIgn 11.3V)-----
------------------------------15 Faults Found------------------------------
 
Last edited:
   #2  

Dadar

Verified VCDS User
Verified
Joined
Nov 13, 2018
Messages
18
Reaction score
12
Location
UK
VCDS Serial number
C?ID=350099
I had exactly the same code on my A5 2014 when I bought it
03220 - Stop Valve for Coolant for Climatronic (N422)
009 - Open or Short to Ground
and traced the fault to the climatronic valve which was located in the plenum chamber next to the blower motor R/H drive UK model

Hope this helps
 
   #3  

MichaelB8.5

Verified VCDS User
Verified
Joined
Apr 8, 2026
Messages
3
Reaction score
1
Location
Birmingham, UK
VCDS Serial number
C?ID=644228
Hopefully it does, have a value on order thanks
 
   #4  

Vdub

Verified VCDS User
Verified
Joined
Dec 18, 2016
Messages
664
Reaction score
385
Location
Netherlands
VCDS Serial number
C?ID=57533
the one in the plenum chamber fails in almost every A4/5/6/7 once due coolant leakage, sometimes completely burning the connector/plug, i have done so many.
 
   #5  

MichaelB8.5

Verified VCDS User
Verified
Joined
Apr 8, 2026
Messages
3
Reaction score
1
Location
Birmingham, UK
VCDS Serial number
C?ID=644228
Swapped the one in the plenum chamber and 03220 - Stop Valve for Coolant for Climatronic (N422) has stayed clear, so looks like I just need to get a second for the transmission thermostat code.
Thanks all
 
Back
Top