fried berlingo ecu??

[Keith mad dog]

I own a 2018 Berlingo Multi space Flair Blue HDi Semi-Auto. Prior to first breakdown approx 7 weeks ago the engine management light periodically came on. The next time I started car the light was off. Needless to say, garage said could do nothing unless light was on and car would need booking in. Frustrating situation as how do you book in if light keeps going out?
7 weeks ago message read to pull over and stop immediately. Turned engine off and tried restarting but would not start although was turning over. Called emergency recovery and got transported home as garage could not receive car for two weeks. Fault appeared to be oil pick up tube filter in sump blocked. This apparently had led to oil shortage in engine which damaged the thermostat, so replaced complete with housing. Having had work completed and ecu checked and cleared, finally got to drive my car home. The following day we took the car out and after approx. 20 miles we had the dreaded same ecu problem with various different message displaying but the main one that kept showing was Gearbox fault. On top of this, the temperature gauge shot straight up to the red zone and the rad fan came on even though the engine was not hot and water was not boiling and engine would not even turn over. Towed back home and garage checked out ecu which they sent away for inspection. The Tec company could find no fault so suggested rebuild which we accepted. Rebuilt ecu fitted and car collected. Following day same thing happened and towed home Ecu returned to Tec company who say there was a fault in workmanship their end so again rebuilt. Back on the road, and once again same thing has happened and car towed home and currently sitting on my drive. Recovery driver read ecu and it came up with 20 faults on his OBD reader.
Sorry this has been so long winded but it has been a long saga. Does anyone have any ideas or experienced same as beginning to believe the need to start thinking outside the box, and maybe a problem with the engine and not the ecu. Thanks in anticipation that someone out there can help

[mickthemaverick]

The idea that the garage would need the light to be on to check the car is nonsense. The light coming on will generate a fault code which is stored in memory until reset so the garage should have carried out a diagnosis and read the fault codes to give them a pointer to what was wrong. I would suggest you get a high end diagnostic kit such as Diagbox and read the codes as a first step. There is a list of members willing to help out with diagnosis and if you find someone close they may be able to help you. Read the paragraphs above the actual list, in the link below, to tell you how to go about it.

viewtopic.php?p=509922#p509922

[RichardW]

Welcome along

Sorry to hear the tale of woe! Without fault codes, very difficult to say what might be going on. Going back to the start, there should have been a history code if the EML has been on. Struggling to see how low oil pressure could lead to the thermostat failing!

So you need to get it scanned (preferably by someone who actually knows what they are doing....!) to see what codes are set, and what the live data is saying when cranked.

[Keith mad dog]

Thankyou for your response and input. I think I can see what you are saying, but being a person of a certain generational age (74), I'm afraid I'm not exactly Tec savvy.
Fortunately, I do have an acquaintance who is an electrical engineer of the old school with very up to date knowledge who I feel it is a good time for a catchup. many thanks Keith mad dog

[PaulC5]

I would not bother using the same garage again, you would be better off using a Citroen dealer or an independent Citroen specialist, both of which would use the correct diagnostic equipment to find out what is wrong rather than wasting time/money on the wrong fix.