Ford Fiesta ECU Codes
A list of ECU codes fitted to the Ford Fiesta model. The code can be found one on a sticker attached to the ECU. For fitment to a Mk1 or 2 Fiesta, a non PATS (passive anti theft system) is the simplest to get up and running.
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Fiesta ECU Codes
| Variant | Year | ECU Name | OEM Ref Number | PATS | FINIS | Part | Output (BHP) |
| XR2i 1.6 litre | 89-90 | 9AAA | 89AB-12A650-AA | 6174054 | XEF9ABAA | ||
| XR2i 1.6 litre | 90 | 9AAC | 89AB-12A650-AC | 1661949 | XEF9ABAC | ||
| XR2i 1.6 litre | 90-91 | 9ADA | 89AB-12A650-DA | XEF9ABDA | |||
| XR2i 1.6 litre | 90-91 | 9AFA | 89AB-12A650-FA | XEF9ABFA | |||
| XR2i 1.6 litre | 90-91 | 1ADA | 91AB-12A650-DA | 6565650 | XEF1ABDA | ||
| XR2i 1.6 litre | 90-94 | 1ABD | 91AB-12A650-DB | 6669509 | XEF1ABDB | ||
| XR2i 1.6 litre | 90-91 | 1AFA | 91AB-12A650-FA | 6565651 | XEF1ABFA | ||
| 1.6 litre 16 Valve | 94-98 | GURU | 94AB-12A650-GB | 7176869 | XEF4ABGB | ||
| 1.8 litre 16 Valve | 92-93 | NEON | 92FB-12A650-CE | 7225398 | XEF2FBCE | 105 BHP | |
| 1.8 litre 16 Valve | 94 on | BEAU | 94FB-12A650-BB | XEF4FBBB | 105BHP | ||
| RS1800 16 Valve | 92 | 2DFC | 92FB-12A650-DC | 673319 | XEF2FBDC | 130BHP | |
| RS1800 16 Valve | 92 | ALSO | 92FB-12A650-DD | XEF2FBDD | 130BHP | ||
| RS Turbo 1.6 litre | 90-91 | OFAB | V90FB-12A650-AB | 6556433 | XEF0FBAB | ||
| RS Turbo 1.6 litre | 91-95 | OFAC | V90FB-12A650-AC | 6626400 | XEF0FBAC | ||