Relay 2.2 HDI unknown fuse.

[Willpo99]

There is a simple question to ask, but the answer is NOT simple.

Is the vehicle going into limp mode BECAUSE the fuse blew, or is the fuse blowing BECAUSE she is going into limp mode? Personally I would guess the former, and something the fuse is feeding is blowing the fuse. If that something is related to engine management (as Marc has said) the ECUs will, to protect the engine (and try to get you home) cause limp mode to happen.

I dont know what order its happening in. All i know is, after its gone into limp, i check the fuse and its blown. Cant see how i can find out the order of events.
That is why i was trying to find out what the fuse was so i could look at that circuit. Im guessing the same as you that it goes into limp after the fuse has blown. What i cannot confirm is if the fuse is linked to the frayed wire. The AA man said it was but only because it came up on his AA fault system as a "tip" to look for. But it has dropped into limp again after the insulation on the wire had been sorted and again the fuse was found to be blown so I'm guessing it cant be connected.

[Hell Razor5543]

I would suggest (as Marc has) that you get the Relay onto a Lexia. This will give you a lot more information. There are Forum members who have Lexia clones who are also willing to help out. Here is the link;

viewtopic.php?f=19&t=56452

[Willpo99]

Ive just found this video.




This is the issue! Same fuse, same symptoms. Annoyingly, he doesn't say what the fuse is for exactly.
He says on the followup that he would be fitting a new "evaporator assembly". What is that? Thought that was part of the air con??

[GiveMeABreak]

I can't hear a word he was saying, but I'll have another go when I can turn it up louder here!

[GiveMeABreak]

Ok, so here is the P15BE (73) code. Now Iknow there is a TSB (Technical Service Bulletin) that was issued for this problem - but I don't have that document. It would seem it is a problem with this setup.

What does make sense is that for whatever reason (wire shorting / heat damage) etc., it is likely affecting the diesel fuel atomiser. A problem with this will put the van into limp mode and if shorting - will of course blow your fuse after a while. If the engine ECU detects an issue with the system it will of course put it into limp mode as I already mentioned a few posts back.

Click the picture to Zoom

Here you can see the fuel atomiser on the diagram - item 22, and a replacement part has been issued - 9816547280

So I can't tell you what the recommendation was that went out to the dealers to remedy the problem, but may be worth a ring to the dealer to see if it was part of a recall?

[Willpo99]

Thank you Marc.

I have had some issues in this area before so a call to the dealer it is then!
Didn’t know about any recall so that’s very useful info.
Thanks.

[GiveMeABreak]

I'm not saying it WAS the subject of a recall, but that there were definitely 2 TSBs for the issue:
b1kw011tq0 (Lack of Power with lighting of the diagnostic warning lamp - if fault code P15BE is present).
b1hw01a4q0 (Loss of power while driving, with lighting of the engine diagnosis warning lamp - if the fault code P15BE is present).

Note in those document references I quoted they are all zeros not letter 'o's

They may help the parts or Service Manager locate them easier.

[Willpo99]

Hi all.

Latest issue with my insufferable Relay, I wonder if anyone can clarify something.

Had a limp mode issue recently. Fault code pointed to 5th injector. (P15BE) Had that replaced at main dealer but fault still pursued.
After some searching, they are now telling me there is a fault with the fuse box and it needs a new one.

Can anyone explain why this should be the case?
Unless there is an obvious short somewhere that would result in some melted insulation or actual flames ( which actually wouldn't be a bad thing after all the grief i've had recently)....,..I cant see what would be the fault that would require a new fuse box.

They are saying that the fuse box is not putting out enough voltage to operate the 5th injector and therefore must be faulty. Makes absolutely no sense to me but maybe i'm missing something.
There was also an issue with fuse 26 blowing. All connected apparently.......

Can anyone shed any light on this??
cheers.

[GiveMeABreak]

As said, I've moved this back to your original topic to avoid several threads. My response would be the same on this issue with this code as previous mentioned in my post above.