Technical Gear Position Sensor Replacement ?

[Jackspaldinglfc]

Looking for some advice on an issue with my Fiat Punto Evo 1.4 petrol (Start/Stop model).

Background:

My gear cable snapped, so I had it replaced. During the repair, the gear position sensor was damaged. The car drove fine for a short period (around 25 miles), but then the EML came on with fault code P181D and the Start/Stop stopped working.


It’s now been confirmed that the gear position sensor is faulty, and I’ve identified the correct replacement part:

• OEM: 55256125 / 55266125
• Aftermarket: S4P24798 (Genuine FCA unit available around £140–£170)

My options as I see them


I’m trying to decide the best route forward:


1. Scrap yard / used part

• Cheapest option
• Risk of getting another worn or unreliable sensor
• Not guaranteed to find one

2. Buy a replacement part (OEM or aftermarket)

• Most reliable fix
• Around £140–£170 new
• Should permanently resolve P181D and Start/Stop issue

3. Remap / code out the system

• Would potentially remove Start/Stop / related sensor checks
• Not sure how viable this is or if it would cause other issues / MOT problems

 

[ceecff]

Some Alfa/Fiat S&S are disabled with diagnostic like Multiecuscan (Evo 1.3 JTDm not), your is petrol may be works or remap.