Here are some of the most likely culprits:
* Low Oil Pressure: This is the most critical possibility. The oil light indicates low oil pressure, which means your engine isn't getting sufficient lubrication. This can lead to catastrophic engine failure if driven. Causes include:
* Low oil level: Check your oil level immediately. Add oil if needed, but don't drive until you've identified and fixed the cause of the low oil.
* Oil pump failure: The oil pump might be malfunctioning, unable to circulate oil effectively.
* Blocked oil filter: A clogged oil filter restricts oil flow.
* Worn bearings: Worn engine bearings can allow oil to escape, resulting in low pressure.
* Leaking oil seals: Leaks in various engine seals can cause oil loss.
* Turbocharger Issues: A malfunctioning turbocharger can significantly reduce power and may indirectly affect oil pressure if it causes oil leaks or excessive oil consumption. Problems could include:
* Turbocharger failure: The turbo itself could be damaged, internally or externally.
* Turbocharger wastegate issues: Problems with the wastegate can restrict exhaust flow, affecting turbo performance.
* Vacuum leaks: Leaks in the vacuum lines that control the turbocharger can lead to poor performance.
* Other Potential Problems:
* Fuel System Problems: Issues with fuel delivery (fuel pump, injectors) could restrict power and indirectly influence the oil pressure if the engine is struggling to run correctly.
* Sensor Problems: Faulty sensors (oil pressure sensor, crankshaft position sensor) can trigger the oil light even if the pressure is actually fine (though unlikely in this scenario). A faulty sensor would be less likely to explain the lack of power.
What to do:
1. Do not drive the car. Driving with the oil light on risks severe engine damage.
2. Check the oil level. Add oil only if it's significantly low; however, adding oil won't solve the underlying problem causing the light to be on.
3. Have the car professionally diagnosed. A mechanic can accurately diagnose the issue using diagnostic tools, checking oil pressure, inspecting the turbocharger, and performing other necessary tests. Ignoring this could lead to costly repairs.
The combination of the oil light and power loss strongly suggests a serious problem. Getting it checked immediately is essential to prevent extensive and costly engine damage.
