MAN TGA 440 Euro5 AdBlue error GDK / PDF 05031-02—what causes this fault?

Question

Hello, Today, the problem with ADBLUE, error as above, maybe someone has a suggestion as to what may be the cause of the failure. Thanks in advance for your help.

daro111 · Answer

Hello.
5031 AdBlue pump (system pressure)
AdBlue pressure cannot be built up during start-up.
System Reaction: System powers off until next system start (terminal 15 on)
Possible causes of errors:
- empty tank
- ventilation or venting of the tank is blocked
- blocked or leaking suction line between the tank and the supply module
- dirty / blocked prefilter
- dirty / blocked main filter
- vent valve blocked mechanically
- the return line to the tank is blocked
Perform the "Initial start-up" procedure with MAN-cats or other equipment
- Actuate the pump (can pressure be built up?). Next
actuate the vent valve to reduce the pressure (is reduction possible?) Repeat both steps several times. If the pressure is not released, replace the prefilter
- replace the sealing rings in the AdBlue suction line

edmar3 · Answer

Hello,
Ad Blue condition in the tank 50%
the driver refueled with Adblue and after driving 200 km he stopped for a pause, after a pause the error disappeared, the balloon went out.
They think the problem will come back when the Adblue level in the tank drops again.
I will contact you and let you know what will happen next.

daro111 · Answer

At the beginning, I suggest checking the obstruction and tightness of the urea pipes and replacing the filters. If this does not help, it will be difficult to hit without specific diagnostics.

mateuszyo · Answer

Hello. I have the same problem with the Mana TGX. GDK / PDF 05031-02. Cannot build up adblue pressure during the test. Ducts unobstructed and sealed. New filters. The suction line sucks briefly adblue fills the filter but nothing else. Help

daro111 · Answer

Hello. Probably SCR module to be regenerated or replaced (pump, solenoid valve).

airsped · Answer

Hello, Man tgx 18.400 2012 in the first driver's tour the emission error popped up, error code GDK / PDF 5 0531-02. Before the tour, we replaced the adblue filter in the pump, but we did not vent the system and I heard that you have to do it in the manas. Is it true?

kakibara · Answer

This is how you should always bleed the adblue pump. Filters are 3rd. You replaced them all.

Fryc64 · Answer

Hello, I have a problem with adblue error 05031-02 filters all 3 replaced, the one on the cable was very dirty. The error is still active. When there is a restart of the system or after turning the ignition switch or it is counted somehow, the pump does not hear any reaction after turning the ignition switch in advance, thank you for help Added after 1 [hours] 16 [minutes]:

kakibara · Answer

It starts when the car meets the conditions for injection and exhaust gas cleaning, eg Temperature behind and in front of the Nox filter is hot. The pump is vented after changing the filters

hehe_2288 · Answer

Hello.
It displays error 05031-02.
I put in new filters, 3 pcs. The hoses are clogged. I tried to bleed the system with the computer and it failed, the pump works but does not generate pressure. Is the pump to be replaced? I wonder if when venting the system, the vent valve is 100% open and after some time it drops to 0%. Should it be like that? Saw pump repair kits (diaphragms and sealants). Will someone suggest what to do in this case?

Added after 1 [minutes]:

I will add that a year and a half ago I installed a new Bosch pump.

kakibara · Answer

Do you have a wire inserted in the dispenser and will you check if it is not connected?
After such works, I always vent with the unplugged and when it shows up, I turn off and put on the cable.
The pressure rises when it hits it, it starts to regress.
Well, when the pump works and it does not beat, it needs to be replaced.

hehe_2288 · Answer

I saw that a pump repair kit is available. Has anyone ever done this? Does it pass the exam?

Chavez · Answer

Engine set Bosch over PLN 1000, and a set of membranes probably PLN 50.
I did such a repair with this set for PLN 50 a year ago and it works.
All these "reconditioned" pumps are probably also done like that.

hehe_2288 · Answer

Well, yes, but a year and a half ago I bought an original pump on the mana website and it lasted only a year and a half, it is probably not profitable to buy a new one ...
Tomorrow I'll try to revive mine, maybe something will come of it

TruckElectronica · Answer

Does not build up the right pressure within a defined period of time (generally speaking) The entire pump as a module or a pump, i.e. an internal element? works well as long as your quality is good probably so unplug the Backflow cable, turn on the start and watch if urea is flying all the time, the valve is supposed to close at some point ... the pump structure itself is not complicated

hehe_2288 · Answer

Today I dismantled the entire pump, it turned out that all the membranes are in perfect condition, but I replaced them with new ones, put them together and it turns out that it does not beat the pressure at all. I put on a new pump and everything was back to normal.
Until now, I wonder how it is possible ...

TruckElectronica · Answer

Look carefully if something is broken or well installed, maybe the repair kit is faulty, the new one is manufacturing and working, so you can omit the rest of the elements in the entire pump, so you should look at the pump itself.
did you turn on the launch several times? maybe the dolphin itself is messing up something and not turning off the backflow valve properly

hehe_2288 · Answer

I tried this a few times and it works all the time ... I noticed a slight crack on this pump, but the crack is at the top of the cables that enter unknown to what ... Since the plug from the adblue dispenser is depleted, probably one of the pins is starting to fail because my 3 has crashed times flue gas cleaning errors, electrical error and something else, and in the meantime it did not show adblue status and I could not connect the computer with the controller ...

There is a scratch here.

TruckElectronica · Answer

These cables go to the heaters that heat the pump

hehe_2288 · Answer

I didn't even know there was a heater ? I hope the new one comes at least two years ... Thanks so much for your help!

hehe_2288 · Answer

I didn't have to wait long, the pump lasted a month and a half, new! Same error again, pump does not build up pressure. Could something be the reason why these push-ups sit down so often? It has been my third pump for less than 2 years ...

Added after 1 [hours] 6 [minutes]:

I ordered an adblue bleed valve, we'll see if it helps.
I already have 3 pumps, each engine works and does not generate pressure. I'm not going to buy another one, someone will tell you where I can get a good repair kit for the adblue pump? I would also be grateful for the catalog number.

kakibara · Answer

And what did this little white filter look like after 1.5 months? Maybe you have muck-sand on the tank day? And that is the reason?

hehe_2288 · Answer

The filter is like new

kakibara · Answer

Also clean on the mesh filter?
I think that something must be on the way to the pump because the fact that it creates pressure at the beginning (it is new has strength) does not mean that something is not blocking the flow.
Do you remember at the beginning that you wrote that the tank is halfway down, when the level drops, it shows a defect on the desktop, maybe there is a problem - I do not know if you have a model of the tank connected to the fuel one, but they often lost their tightness at the connection - and if you are not the first owner, do not know the history of the vehicle, maybe the predecessor welds the tank and there is a problem with the adblu connection - a leak in the hose?

hehe_2288 · Answer

The trail goes me with this adblue ....
The pump flooded me, I bought a used, supposedly 100% functional, with the same numbers as mine. I have connected everything and I do not want to communicate with the controller. Mistakes keep popping up. Do I have to match the pump with the car somehow?

Added after 32 [minutes]:

I will add that it does not show the adblue status on the meter

kakibara · Answer

If there was communication with the computer on the other one, then you have no communication with ... or, if possible, move the computer from the old adblue pump to yours.

hehe_2288 · Answer

There was no communication on the old pump either.

saron22 · Answer

Since there was no communication on the old one and you are sure of the new one, it looks like you have a problem with knitting. This pump has power at all?

hehe_2288 · Answer

Everything was there, the problem appeared when the pump flooded me, after connecting a new pump, the problem is the same.

I remember that there were similar symptoms when the orange plug at the tank did not connect ...

What are the symptoms of a broken adblue level sensor?

MAN TGA 440 Euro5 AdBlue error GDK / PDF 05031-02—what causes this fault?

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