Technical 2019 Ducato EML on P2146 fault code

[jackwhoo]

@Mohotel Adventures

When new ecu fitted ask workshop to check injector variances are within tolerance.
Do a couple of hundred miles then recheck injector tolerances as per thread "it's over before it started"

 

[jackwhoo]

I should have said injector leak off test as per post 14

Injector variance check good idea anyway

 

[Mohotel Adventures]

I should have said injector leak off test as per post 14

Injector variance check good idea anyway

We had the ECU replaced plus the injector leak off test all seems fine.
Many thanks

 

[jackwhoo]

We had the ECU replaced plus the injector leak off test all seems fine.
Many thanks

Hi,
How are you doing with this 10months later?
Cheers
J

 

[MohoAdventures]

We also got a new ECU and it fixed it for us too.

I hadn't realised, but they took the image from the old ECU, got the image updated and then flashed the new ECU.

In hindsight I would have tried updating the old ECU first as I still suspect an input had drifted out of tolerance and a software update *may* have fixed it. Nothing to lose and might have saved the ~£1000 cost of new hardware.

At least we have a drive able van now.

 

[theoneandonly]

@jackwhoo throughout this thread is a refference to a leakoff test. Is there a standard Fiat set of conditions for this test, and acceptable test results.
When i did mine a few years ago there were a variety of methods and conditions used on a number of forums but no specific Fiat or VW use xxxx rpm for 30s then xxmins @xxxx rpm ie no standard conditions. Any ideas anyone.

 

[jackwhoo]

https://www.fordwiki.co.uk/index.php/Injector_Leak-Off_Test

This looks sensible but figures will change between manufactures

Main thing to look for is one or more injectors leaking back significantly more than the least leaking injector.