Hi all, I'm reaching out for some input on a major engine replacement project for my 2016 Iveco Daily Motorhome (3.0L).
My original engine has failed, and I am planning to install a newer engine unit due to availability. My core concern is electronic viability and integration between the model years.
Vehicle Details:
The Core Problem: ECU & Wiring Harness Compatibility
- Original Engine Code: F1CFL411H (2016 model, Pre-Euro 6 Step D/E)
- Replacement Engine Code: F1CFL411B (Post-2019/2020 model, Euro 6 Step D/E)
The engine blocks (F1C 3.0L) are mechanically identical. However, the newer F1CFL411B unit uses a newer Bosch EDC17-based ECU
My Main Question:
Since I am uncertain if the wiring is different, I need to know if the 2016 vehicle's original ECU/CAN-Bus can be successfully reprogrammed (flashed or cloned) to communicate and run the newer F1CFL411B engine? Or is the fundamental hardware and firmware difference between these two Euro 6 steps too great to bridge electronically?
Any advice from someone who has navigated the electronic headache of swapping F1C variants across Euro emissions steps would be massively appreciated.
- Specifically, what are the differences in the electrical connections/plugs between the H-variant and the B-variant engine looms?
- Are there specific sensors (such as NOx sensors, DPF pressure sensors, or injector coding) that must be physically retained from the older engine and transplanted, or bypassed/simulated for this swap to work?
- Has anyone successfully "downgraded" a newer F1C engine using an older EDC17 (or equivalent) ECU from the pre-2019 Daily model?
Thanks,
Liam
Engine replacement iveco daily
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by liamdavidson, Oct 20, 2025.