Type: Visteon Engine Management
Fits: Ford
Engines:
Year:
Fuel: Petrol
Ref: ECUT51175
Note: This ECU may also fit other models.
In our table the ending BD follows two bases, 1M5F-12A650 and 1S4F-12A650, so a Ford engine ECU from this page is identified by the start of its number before the end. Our own engineers repair the unit at component level in our UK workshop.
Every number in our table is on record from the Ford Focus. Ten of the numbers in our table are on record as LP4-335 units.
Read the base before the ending
Each Ford number here has four opening characters, then 12A650, then a two-letter ending; the first two parts make up the base. Our table prints each number without hyphens, so 1M5F-12A650-AB appears as 1M5F12A650AB, followed by a four-character code.
The fifteen numbers in our table sit on four bases. 1M5F-12A650 carries ten of them and 1S4F-12A650 carries three, while 1U7A-12A650 and 2U7A-12A650 carry one each.
Reading the base first narrows the search before the ending comes into it. With BD it is essential: 1M5F-12A650-BD and 1S4F-12A650-BD share their last two letters, and their opening characters tell them apart. Their codes, JQZ2 and POLE, differ too.
The 1M5F-12A650 numbers in our table
1M5F-12A650-AB is followed in our table by OWF0. It is on record from the Ford Focus.
1M5F-12A650-AC has OFW1 printed after it in our table. This number is on record from the Ford Focus 1.4.
1M5F-12A650-AD carries the code OFW2. It is on record as an LP4-335 unit. It is also on record from the Ford Focus 1.4.
1M5F-12A650-AE carries 4AHA. It is on record as an LP4-335 unit. The Ford Focus 1.4 is on record for it too.
1M5F-12A650-AF is followed in our table by 4AHB. It is on record from the Ford Focus 1.4.
1M5F-12A650-BB carries JQZ0. It is on record as an LP4-335 unit. It is also on record from the Ford Focus 1.6.
1M5F-12A650-BC carries JQZ1. This number is on record as an LP4-335 unit. The Ford Focus 1.6 is also on record for it.
1M5F-12A650-BD carries JQZ2. It is on record as an LP4-335 unit. It is also on record from the Ford Focus 1.6.
1M5F-12A650-BE carries 2ANA. It is on record as an LP4-335 unit. It is also on record from the Ford Focus 1.6.
1M5F-12A650-BF carries 2ANB. It is on record as an LP4-335 unit. The Ford Focus 1.6 is on record for it as well.
1S4F-12A650: BD, CD and ED
Our table prints three numbers on this base, with the endings BD, CD and ED.
1S4F-12A650-BD carries POLE. It is on record as an LP4-335 unit. It is also on record from the Ford Focus 1.6.
1S4F-12A650-CD carries SLAP. It is on record from the Ford Focus.
1S4F-12A650-ED carries JUDO. It is on record as an LP4-335 unit. It is also on record from the Ford Focus 1.6.
The 1U7A and 2U7A numbers
Our table prints 1U7A-12A650-LA with P070 after it. It is on record as an LP4-335 unit. It is also on record from the Ford Focus.
2U7A-12A650-KA has STV0 printed after it in our table. It is on record from the Ford Focus 1.6.
The code after each number as a cross-check
When a label is faded or rubbed, the code after the Ford number is a cross-check. Several codes in our table come in close runs, so read their last character with care.
JQZ0, JQZ1 and JQZ2 follow 1M5F-12A650-BB, BC and BD, and differ only in their final digit. 2ANA and 2ANB follow BE and BF, and differ only in their final letter. Our table also prints 4AHA after AE and 4AHB after AF.
In our table, the last character of the code moves on one step in each of those runs, just as the last letter of the ending does. If the ending and the code on your label seem to point to different rows, say so on the Repair Form rather than picking one.
The repair, step by step
The unit travels to us by post from wherever in the UK the car is kept. To begin, transcribe the label, base first, into our Repair Form along with the symptoms.
On arrival the unit is logged, visually inspected and electrically tested, then taken through diagnostics for its particular fault. You hear back from us with the outcome and an estimate, and nothing chargeable is done until you have authorised it.
The repair is component-level work by our engineers, done under a microscope with temperature-controlled rework equipment. Final testing is the last stage, and we give that repair a 24-month warranty.
For any other Ford number, look through the Ford engine ECUs we list alongside this one. Other makes are covered by our engine ECU repairs beyond Ford, and the engine ECUs that come through our workshop are listed on one page.
Our table of fifteen Ford numbers follows.
Common part numbers associated with this type of unit
| Visteon Number | OEM Number | Price | Warranty |
|---|---|---|---|
| 1M5F12A650AB OWF0 | £POA | 24 Months | |
| 1M5F12A650AC OFW1 | £POA | 24 Months | |
| 1M5F12A650AD OFW2 | £POA | 24 Months | |
| 1M5F12A650AE 4AHA | £POA | 24 Months | |
| 1M5F12A650AF 4AHB | £POA | 24 Months | |
| 1M5F12A650BB JQZ0 | £POA | 24 Months | |
| 1M5F12A650BC JQZ1 | £POA | 24 Months | |
| 1M5F12A650BD JQZ2 | £POA | 24 Months | |
| 1M5F12A650BE 2ANA | £POA | 24 Months | |
| 1M5F12A650BF 2ANB | £POA | 24 Months | |
| 1S4F12A650BD POLE | £POA | 24 Months | |
| 1S4F12A650CD SLAP | £POA | 24 Months | |
| 1S4F12A650ED JUDO | £POA | 24 Months | |
| 1U7A12A650LA P070 | £POA | 24 Months | |
| 2U7A12A650KA STV0 | £POA | 24 Months |


