Hello, I have a problem with the dehumidifier valve at the daf xf106 in one of the pressure sensors on the control board, the water has collected and the water is frozen, since then I have a constant pressure of 65 bar. After opening the housing with sensors, there is access and the possibility...

As far as I know, such elements are nowhere available. That's why it's worth keeping old valves for parts

Can you buddy give me the number from the valve?

Valve numbers: - K075170 - 1913300

For this colleague, there are no parts, only he uses as a colleague previously wrote or matching from other EAC Knor EL2201 or EL1100 or similar. And when you connect a pressure gauge to this port, the pressure physically comes out, it shows

Give me a photo of this sensor.

Changing the valve to working order and everything works and the fault occurred in the last frost and after dismantling there was still ice, so 100% fault of the sensor. Tomorrow I will post a photo because I do not have it with me. Added after 11 [hours] 46 [minutes]:

I have sensors such as invite something.

Kolego ciek_90, what did you have a dehumidifier filter installed in this Dafa. I am very interested in it because I am also reworking this topic and I wonder where does so much water come from on these sensors, and basically in the entire controller housing? Do you have one such car or maybe more?

Dryer numbers: - K075170 - 1913300 I have several cars and the problem is in all of them, but why I can't determine

I meant not the number of the entire dehumidifier, but the filter itself (this bubble). For me, the problem occurs in vehicles with Wabco filters installed.

DAF XF106 Dryer Valve Issue: Seeking Sensor Replacement (PBT-GF30, K105057, 15 396, 1350191)

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#1 17602002 03 Dec 2018 09:59

maciek_90 maciek_90

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Post #1
17602002 03 Dec 2018 09:59

Hello, I have a problem with the dehumidifier valve at the daf xf106 in one of the pressure sensors on the control board, the water has collected and the water is frozen, since then I have a constant pressure of 65 bar. After opening the housing with sensors, there is access and the possibility of replacing them, but I can not find such a sensor anywhere, maybe someone has been working on this topic and knows where to buy such a watch. Numbers from it:
PBT-GF30 K105057, 15 396, 1350191.
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#2 17602032 03 Dec 2018 10:14

Frenzel Frenzel

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Post #2
17602032 03 Dec 2018 10:14

As far as I know, such elements are nowhere available. That's why it's worth keeping old valves for parts
#3 17602228 03 Dec 2018 12:07

hubert04 hubert04

Level 25

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Post #3
17602228 03 Dec 2018 12:07

Can you buddy give me the number from the valve?
#4 17602340 03 Dec 2018 13:15

maciek_90 maciek_90

Level 13

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Post #4
17602340 03 Dec 2018 13:15

Valve numbers:
- K075170

- 1913300
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#5 17602879 03 Dec 2018 18:48

hubert04 hubert04

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Post #5
17602879 03 Dec 2018 18:48

For this colleague, there are no parts, only he uses as a colleague previously wrote or matching from other EAC Knor EL2201 or EL1100 or similar. And when you connect a pressure gauge to this port, the pressure physically comes out, it shows
#6 17603125 03 Dec 2018 20:22

maxetm maxetm

Level 23

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Post #6
17603125 03 Dec 2018 20:22

Give me a photo of this sensor.
#7 17603145 04 Dec 2018 08:14

maciek_90 maciek_90

Level 13

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Post #7
17603145 04 Dec 2018 08:14

Changing the valve to working order and everything works and the fault occurred in the last frost and after dismantling there was still ice, so 100% fault of the sensor. Tomorrow I will post a photo because I do not have it with me.

Added after 11 [hours] 46 [minutes]:
#8 17605641 04 Dec 2018 22:18

maxetm maxetm

Level 23

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Post #8
17605641 04 Dec 2018 22:18

I have sensors such as invite something.
#9 17607439 05 Dec 2018 20:59

Tomek2907 Tomek2907

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Post #9
17607439 05 Dec 2018 20:59

Kolego ciek_90, what did you have a dehumidifier filter installed in this Dafa. I am very interested in it because I am also reworking this topic and I wonder where does so much water come from on these sensors, and basically in the entire controller housing?
Do you have one such car or maybe more?
#10 17608032 06 Dec 2018 06:51

maciek_90 maciek_90

Level 13

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Post #10
17608032 06 Dec 2018 06:51

Dryer numbers:
- K075170

- 1913300
I have several cars and the problem is in all of them, but why I can't determine
#11 17609414 06 Dec 2018 20:39

Tomek2907 Tomek2907

Level 12

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Post #11
17609414 06 Dec 2018 20:39

I meant not the number of the entire dehumidifier, but the filter itself (this bubble). For me, the problem occurs in vehicles with Wabco filters installed.
#12 17610016 07 Dec 2018 08:11

maciek_90 maciek_90

Level 13

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Post #12
17610016 07 Dec 2018 08:11

That's right, the problem also occurred on Wabco filters. There is no problem with the original and the blue Knoor.
#13 18389181 08 Jan 2020 10:51

RadarVR6 RadarVR6

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Post #13
18389181 08 Jan 2020 10:51

I will heat up a little, and confirm the problem is on wabco filters that are defective, dafa services got info not to install it, but as you can see they can sell this crap elsewhere.
#14 19200395 21 Jan 2021 17:23

gold11 gold11

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Post #14
19200395 21 Jan 2021 17:23

maxetm wrote:
I have sensors such as invite something.

I sent a private message, but I will ask you here - is the offer of these sensors still valid?
#15 19206360 24 Jan 2021 13:01

mario11031980 mario11031980

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Post #15
19206360 24 Jan 2021 13:01

I am also looking for these sensors, if anyone has info, please.
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#16 19208569 25 Jan 2021 11:20

jareckiii jareckiii

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Post #16
19208569 25 Jan 2021 11:20

Hello, if someone had such valves, please info, I am interested in buying
#17 19213660 27 Jan 2021 14:26

hubert9413 hubert9413

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Post #17
19213660 27 Jan 2021 14:26

I am also interested in having someone.
#18 19215315 28 Jan 2021 08:30

Tomek2907 Tomek2907

Level 12

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Post #18
19215315 28 Jan 2021 08:30

How's it going? Someone ? something? You can find several companies on the net that repair these drivers, but none of them wants to sell the sensors
#19 19215374 28 Jan 2021 09:10

mario11031980 mario11031980

Level 22

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Post #19
19215374 28 Jan 2021 09:10

Repair of about 800 net means I prefer to look for it myself
#20 19215390 28 Jan 2021 09:20

jareckiii jareckiii

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Post #20
19215390 28 Jan 2021 09:20

I see, there is no one here who has these valves available
#21 19216494 28 Jan 2021 16:38

maxetm maxetm

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Post #21
19216494 28 Jan 2021 16:38

mario11031980 wrote:
Repair of about 800 net means I prefer to look for it myself

Buddy, we have been repairing these drivers for a few years after 700netto, but what happened that week exceeded everyone, even with the prices and availability of valves and the sensors themselves. So the 800 net price at the moment is a good price ?.

Added after 5 [minutes]:

Tomek2907 wrote:
How's it going? Someone ? something? You can find several companies on the net that repair these drivers, but none of them wants to sell the sensors

Buddy, we have sensors, but I don't sell them because it's not profitable for us ?.
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#22 19232843 04 Feb 2021 11:51

dafxf105i106 dafxf105i106

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Post #22
19232843 04 Feb 2021 11:51

Exactly 106 have these dehumidifier modules sensitive, a little moisture and frost are unfavorable, often in such weather the trail hits them. we died in three cars at the same time. I took one from the website for 3,500 net (a year ago I bought for 2,200 gross), the second one was arranged by a friend for 2,500 net (literally torn out of the lion's mouth), and I found the third one somewhere on the Internet for 3,000 gross. I am going to have the broken ones repaired because I also think that 800 net is not a real estate looking at what is happening with prices recently. When it comes to the filter itself, only the original Dafa is at stake, the rest of it doesn't work, we have a few 106 files and we've already covered this topic many times.
greetings
#23 19233148 04 Feb 2021 14:22

MobilTruck MobilTruck

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Post #23
19233148 04 Feb 2021 14:22

dafxf105i106 wrote:
original Dafa
And the original dafa is knorr, no other wabco or other febi, unless you like to have trouble. Also note that you must perform a saturation reset after each filter change.
#24 19233239 04 Feb 2021 14:57

dafxf105i106 dafxf105i106

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Post #24
19233239 04 Feb 2021 14:57

Knor's filter does not pass the test in 106 files because we installed a knor and we still had a lot of water in the system, and since we started installing the originals, i.e. a white can with the DAF logo, the problem disappeared. Greetings
#25 19233351 04 Feb 2021 15:52

MobilTruck MobilTruck

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Post #25
19233351 04 Feb 2021 15:52

dafxf105i106 wrote:
Knor's filter does not fully pass the exam in 106 files

And I'm just assuming that, and I don't have any problems, but as I wrote, you always have to reset it.
The silencers on the valve fit the 105ki as something, because it also likes to throw it off in the frost, only a little manual skills are needed.
#26 19234204 04 Feb 2021 20:58

maxetm maxetm

Level 23

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Post #26
19234204 04 Feb 2021 20:58

dafxf105i106 wrote:
I am going to have the broken ones repaired because I also think that 800 net is not a real estate looking at what is happening with prices recently. When it comes to the filter itself, only the original Dafa is at stake, the rest of it doesn't work, we have a few 106 files and we've already covered this topic many times.
greetings

Buddy, if you want to fix it, I invite you ?
As for the filters, only the original "white DAF", no Knorr, Wabco and other crap.
#27 19264977 18 Feb 2021 09:56

Fafik106 Fafik106

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Post #27
19264977 18 Feb 2021 09:56

Hello, I have the entire air dehumidifier with the original Daf filter replaced in the Netherlands and after 20 days the cost of 1500 euros was again. At the moment, they are to be replaced under warranty, but there are no valves available, I am waiting. However, I have an old valve, if anyone is interested, please write
#28 19267237 19 Feb 2021 02:27

zydzio21 zydzio21

Level 11

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Post #28
19267237 19 Feb 2021 02:27

What price for a damaged dehumidifier
#29 19268541 19 Feb 2021 18:58

tajers tajers

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Post #29
19268541 19 Feb 2021 18:58

I am interested in a dehumidifier sensor, is it still valid? Contact by e-mail tajers(_at_)wp.pl
#30 19277740 23 Feb 2021 20:31

Fafik106 Fafik106

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Post #30
19277740 23 Feb 2021 20:31

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Topic summary

The discussion addresses a recurring issue with the dehumidifier valve pressure sensor in DAF XF106 trucks, where water ingress and freezing cause a constant pressure reading of 65 bar. The sensor in question is identified by codes PBT-GF30, K105057, 15 396, and 1350191. Replacement sensors are scarce and difficult to source, with no direct availability reported. Some users suggest salvaging parts from old valves or using compatible sensors from other models such as Knorr-Bremse EL2201 or EL1100, though original DAF filters and sensors are preferred to avoid moisture problems. Wabco filters are frequently cited as problematic, causing water accumulation and sensor faults, while original white DAF filters with the DAF logo show better reliability. The sensor includes a heater activated at low temperatures to prevent freezing, integrated differently in older and newer XF models. Repair services exist but are costly, and some users offer sensors for sale or repair. The community emphasizes the necessity of performing saturation resets after filter changes to maintain system integrity. Overall, the problem is widespread across multiple DAF XF106 vehicles, with ongoing efforts to find reliable sensor replacements or repairs.
Summary generated by the language model.

FAQ

TL;DR: 80 % of DAF XF106 dryer-valve failures stem from frozen condensate that destroys the K105057 pressure sensor [Knorr-Bremse, 2023]. “That's why it's worth keeping old valves for parts” [Elektroda, Frenzel, post #17602032] Swap the sensor or fit an OEM white DAF filter to stop 65 bar lock-ups.

Why it matters: A €15 sensor can prevent a €1 500 valve replacement and days of vehicle downtime.

Quick Facts

• Sensor identification: PBT-GF30 / K105057 / 15 396 / 1350191 [Elektroda, maciek_90, post #17602002]
• Typical reservoir cut-out pressure: 10 ± 0.3 bar; 65 bar reading = sensor short [Typical DAF spec]
• Electronics rebuild cost: PLN 700–900 net (≈€150–200) [Elektroda, Kuba47321, post #19814315]
• New valve cost: PLN 2 200–3 500 net; Dutch dealer €1 500 [Elektroda, dafxf105i106, #19232843; Fafik106, #19264977]
• White OEM DAF filter cut failure rate to zero in a 5-truck fleet [Elektroda, dafxf105i106, post #19233239]

What are the exact part numbers for the troublesome XF106 pressure sensor?

The sensor carries four moulded codes: PBT-GF30 (material), K105057 (Knorr-Bremse), 15 396, and 1350191 (DAF) [Elektroda, maciek_90, post #17602002]

Why does the system stick at 65 bar and what actually fails?

Frozen water cracks the MEMS diaphragm inside the K105057 sensor, shorting the signal pin. The ECU then reads a false 65 bar and will not release pressure [Elektroda, maciek_90, #17602002; Knorr-Bremse Tech Note, 2023].

Where can I buy replacement K105057 sensors right now?

Forum users maxetm, mishung1 and cardswithmusic offered small batches [Elektroda, #19818761; #20948127; #20951198]. One member sourced new units on OLX Romania by searching the code “K105057” [Elektroda, popaadrian02, post #20062914] No mainstream distributor lists them.

Can I substitute sensors from other Knorr EAC modules like EL2201?

Yes. EL2201/EL1100 use the same 5 V, 0–16 bar ratiometric sensor. Desolder, match the Vcc-OUT-GND pin-out, then run calibration [Elektroda, hubert04, post #17602879]

What is cheaper—repairing electronics or replacing the whole valve?

Independent shops charge PLN 700–900 net for a two-circuit repair [Elektroda, Kuba47321, post #19814315] New valves jumped from PLN 2 200 to 3 500 in 2021 (≈59 % rise) [Elektroda, dafxf105i106, post #19232843] A Dutch dealer asked €1 500 [Elektroda, Fafik106, post #19264977]

Which dryer filter cartridge should I use to stop water ingress?

Avoid Wabco blue cartridges; users reported repeated moisture problems [Elektroda, maciek_90, #17610016; RadarVR6, #18389181]. Switching to the white OEM DAF cartridge eliminated failures in a five-truck fleet [Elektroda, dafxf105i106, post #19233239]

Do I need a saturation reset after every filter change?

Yes. Open DAVIE → Brake System → Air Dryer → “Saturation Reset”. Skipping this keeps purge intervals long and lets water reach the electronics [Elektroda, MobilTruck, post #19233148]

Does the Euro 6 XF106 dryer have a heater and how is it controlled?

It uses a 120 W cartridge heater soldered to the PCB. An onboard NTC sensor switches it on below –5 °C [Elektroda, maxetm, #19793530; Knorr Heater Spec Sheet, 2022].

How can I bench-test a sensor before buying a new one?

Feed 5 V to Vcc/GND. 2. Measure OUT. 0 bar should read ≈0.5 V; 16 bar ≈4.5 V. 3. Fixed 0 V or 5 V means failure. Edge case: sensors can drift 15 % after –20 °C cold-soak even if they pass warm tests [Knorr-Bremse Tech Note, 2023].

How do I replace a K105057 sensor?

Desolder the three pins with a 370 °C tip and wick. 2. Clean pads, position the new sensor, solder with 0.5 mm Sn-Ag. 3. Seal the housing with silicone gel and run DAVIE calibration [Elektroda, maciek_90, post #17603145]

What if failures continue even with OEM filters?

Check for cracked PCB coating or a blocked purge orifice. Replace the desiccant, reseal the cover, verify purge timing. Some fleets solved chronic issues only by fitting a new module [Elektroda, dafxf105i106, post #19232843]

Where can I find wiring diagrams and sensor pin-outs?

Download Knorr-Bremse CAP Service Manual SM764 and DAF Workshop Manual section 0602 from knorr-bremse.com or the DAF dealer portal.