Technical 2018 Multijet 2.3; EML Fault codes (41,000 miles)

[RichyWHL]

I'm after some help/advice please. For around a year I've had code P214612 occurring which I know is "Control Unit faulty, injectors supply, short to battery". FIAT Hounslow spent 3 hours looking at it(costing £540!!!) to tell me it probably needs either new injectors or ECU, which is exactly what my garage said, but they couldn't be sure which. They cleared the fault but couldn't cause the light to come on again and it didn't reappear for about another 500 miles or so.

My EML amber light is on again and my local garage(not specialist FIAT) have told me that along with P21462 I also now have the following codes: P226467, P018015, P224492, P124892, P211172. I don't know what diagnostic software/device they use, I've read here about MultiECUScan, I'm not mechanically minded and truthfully am perplexed by the whole thing. I'm waiting to hear back from local garage on his thoughts/diagnosis and plan!

After reading various posts here I think I should add that I've (unfortunately) never added any diesel cleaner and have used various unknown filling stations across Spain/France/Germany/Italy.

So my questions are please:
1) What are these fault codes?
2) Would it be more beneficial to get to a garage/person with MultiECUScan(A for Alfa in Aylesbury is my nearest)?
3) Has anybody had experiences which might help me?
4) Are these just standard issues that come with a van of my age and mileage?

Thank you in advance, and I hope I've been clear.

 

[theoneandonly]

@RichyWHL there are a multitude of errors there that relate to a plethora of sensor across the shop. ARE there any BCM errors?
the favorite would be chaffed wiring some where causing a short posibly on 5V line, even a short on one of the sensors.
Whenever such error appears on any modern vehicle with Canbus. The best first DIY task is to find as many Earth's as possible and clean and remake them. Eliminating that factor is essential, as the tiny currents and voltages in wiring on the bus systems are affected by poor conductivity.

The Injector supply error may be best solved by a diesel expert who would put a occiliscope on the system.

P2244 refers to the O2 sensor, there is a bundle of wires at top of DPF, this thread is far from identical but cause may be same.

His problem was the harness/ sender wiring at the top of the engine, just to the left side of the vacuum black box. (Left as you are standing looking at the engine).
Vibration had caused the wires to fret against each other and wear down exposing bare wires, then it caused intermittent shorts of the low voltage supply from the ECU which is how it knocked out other readings. A quick PVC tape of the bare wires solved the problem. It was the wires going to the second DPF sensors (as you look down) it's the pre cat exhaust temp sensor. I now await him coming for another Multiecuscan data run so we can check the DPF.
Separately my local garage has taken weeks to solve another same Ducato which wasn't regenning properly, he's just replaced this same sensor, problems gone...
We are aware that fault codes are only written in the software for some components which is why you have to sit back and think....
My guess is you start by looking at the wiring for shorts / breaks.



extracted from

Ducato 2.3 multijet Fan turning on immediately after shutting down engine | FIAT Ducato

Hello dear fiat users! I'm new to the forum. I just bought a 2017 Ducato 2.3 multijet 130 euro 6 twin egr(no AdBlue) from an auction. Been daily driving it for the past 4 weeks and I've been loving it. Such a great handling van with so much power. The car functions very well and drives...

www.fiatforum.com

 

[RichyWHL]

@RichyWHL there are a multitude of errors there that relate to a plethora of sensor across the shop. ARE there any BCM errors?
the favorite would be chaffed wiring some where causing a short posibly on 5V line, even a short on one of the sensors.
Whenever such error appears on any modern vehicle with Canbus. The best first DIY task is to find as many Earth's as possible and clean and remake them. Eliminating that factor is essential, as the tiny currents and voltages in wiring on the bus systems are affected by poor conductivity.

The Injector supply error may be best solved by a diesel expert who would put a occiliscope on the system.

P2244 refers to the O2 sensor, there is a bundle of wires at top of DPF, this thread is far from identical but cause may be same.

His problem was the harness/ sender wiring at the top of the engine, just to the left side of the vacuum black box. (Left as you are standing looking at the engine).
Vibration had caused the wires to fret against each other and wear down exposing bare wires, then it caused intermittent shorts of the low voltage supply from the ECU which is how it knocked out other readings. A quick PVC tape of the bare wires solved the problem. It was the wires going to the second DPF sensors (as you look down) it's the pre cat exhaust temp sensor. I now await him coming for another Multiecuscan data run so we can check the DPF.
Separately my local garage has taken weeks to solve another same Ducato which wasn't regenning properly, he's just replaced this same sensor, problems gone...
We are aware that fault codes are only written in the software for some components which is why you have to sit back and think....
My guess is you start by looking at the wiring for shorts / breaks.



extracted from

Ducato 2.3 multijet Fan turning on immediately after shutting down engine | FIAT Ducato

Hello dear fiat users! I'm new to the forum. I just bought a 2017 Ducato 2.3 multijet 130 euro 6 twin egr(no AdBlue) from an auction. Been daily driving it for the past 4 weeks and I've been loving it. Such a great handling van with so much power. The car functions very well and drives...

www.fiatforum.com

Hi @theoneandonly . Thanks for all the info.
At the bottom of the photo I attached it does say "2 - BCM (Body Controller)" but I don't what else it says on that line as it's off-photo. With my very limited engine knowledge I'll have a look at all this stuff. After reading a lot of posts on here I did have a feeling it's shorting/electrical. So when I was away, I managed to turn the EML light off a few times by whacking down the fan just as I turned the ignition on(does this give a clue to anything?).
Also, I had read the quoted post about the fan as that's also happened to me twice recently. I'll see if I can find any dodgy looking wiring/connectors.
Thanks again.

 

[theoneandonly]

If you get more info on the bcm faults or find the wiring issues, let us know. Thanks