That's a classic transmission pressure sensor fault showing those symptoms. A faulty pressure switch or sensor can definitely cause rough shifting, slipping, and limp mode activation. It's a fairly common issue but needs proper diagnosis since similar symptoms could indicate more serious transmission problems.
Start with having a transmission diagnostic scan done at a reputable transmission shop. The sensor itself isn't terribly expensive (€100-200 for the part) and labor should be 1-2 hours if that's truly the only issue. Total repair costs typically range €300-500 for a straightforward sensor replacement.
However, make sure they verify it's just the sensor. Sometimes a bad sensor reading can be caused by underlying transmission issues like low fluid, contamination, or internal wear. A proper shop will check fluid condition and pressure readings before just swapping parts.
For reliability, genuine OEM sensors tend to last longer than aftermarket options. If you do get it repaired, request they use factory parts even if slightly more expensive. The peace of mind is worth it given how critical proper pressure readings are for transmission function.
thomasblade2
Start by checking the engine oil level and condition, as low or dirty oil can cause engine performance issues. Also, inspect the transmission fluid level and condition, as this can affect shifting and cause slipping. If both fluids are fine, consider scanning for diagnostic trouble codes (DTCs) to pinpoint specific issues. Let us know what you find or if you have any further questions!