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Thread: 2012 Fiat Ducato 3.0 - Keeps going into limp mode... please help Reply to Thread
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  Topic Review (Newest First)
13-03-2020 19:07
Originally Posted by KeithChesterfield View Post
Are there any other lights showing on the dashboard that shouldn't be - that would indicate a possible fault with the ECU which is a well known problem with Ducato of that age.

No Keith just the red engine light ;-/
13-03-2020 08:30
KeithChesterfield Are there any other lights showing on the dashboard that shouldn't be - that would indicate a possible fault with the ECU which is a well known problem with Ducato of that age.

12-03-2020 17:42
Water? Engine Limp Mode 3.0 Ducato 2012

Hi - I'm having exactly the same issue - keep going into limp mode - replaced injector 1 as per the diagnostics then OK for about 45 minutes then back to red engine light & limp mode ;-( Now saying injector 2 in faulty but just not convinced. Like you 2012 Ducato 3.0 auto with just 15,000 miles on the clock and only recently discovered water sitting in the injector rail through poor design. I think it may be worse than we're only using occasionally as daily users are probably evaporating any water by running the engine hot more often.

Not sure where to go from here - Fiat diagnostics software feels more like 'best guess' I'm feeling! Any engineers out there who could help steer me in the right direction? As per someone else's suggestion, I took the R/H headlight out and checked underneath for potential water ingress/rusting there but it was totally dry and everything seemed perfectly OK. Any help/suggestions would be greatly appreciated.
16-12-2019 17:33
roy660 hi thanks for your help i will seal and fix the scuttle tomorrow there is a small engine cover on the engine but there still a lot of water around injectors
16-12-2019 17:28
roy660 i fitted cheap new ones of ebay with wire on them im going to buy fait ones and refit all of them again i did solder all wires together

16-12-2019 09:18
powerplus hi

i would suggest that you first address the water ingress issue as most smaller engines have a cover on top of the engine to divert the water away

there has been lots of discussions on here in the past about ways to stop the water getting onto the electrics and 1 is to make extra holes in the scuttle and run the water away with added pipework and also to seal the scuttle where it sits on the windscreen

i also remember that there was an issue where the wiring harness chafed under the bonnet

i am surprised yours does not have a cover over the injectors to keep them dry

16-12-2019 08:11
eurajohn Another question, when you changed the connector plugs did you use the ones with wires attached and make joints on wires?
Or remove the old plug and re-use the original pin?
Or remake the assembly completely with new plug and pins?

The system requires secure electrical connections to function properly, if you have made poor joints that could be the cause of your problem.

15-12-2019 18:08
Originally Posted by roy660 View Post
I have lots of water around my injectors and there seems to be some leakage around the scuttle, has anyone ever replaced the harness because of this?
I suggest as a first step removing the lead from the injector and completely drying it out the plug /socket with a hair dryer.
15-12-2019 16:50
Originally Posted by JanHank View Post
Thanks Jean. I wonder why one of the men didn't answer me, perhaps they thought I was using the double meaning 😂 me being me.
I must say, I resemble that remark.

15-12-2019 16:35
eurajohn Did you replace the injector with a new or used item?

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