If the oil light is coming on despite the oil level being full, it could indicate a problem with the Oil Pressure system. The oil pressure system is responsible for maintaining adequate oil pressure throughout the engine. When the oil pressure drops below a certain level, the oil light is triggered as a warning.

Here are a few possible reasons why the oil light may come on despite the oil level being full:

1. Faulty oil pressure sensor:

The oil pressure sensor may be malfunctioning, giving a false reading and causing the light to illuminate.

2. Oil pump issue:

The oil pump may not be functioning properly, resulting in inadequate oil pressure despite having sufficient oil.

3. Clogged oil passages:

Over time, the oil passages in the engine can become clogged with debris or sludge, impeding the proper flow of oil and causing low oil pressure.

4. Oil filter blockage:

A clogged or restricted oil filter can restrict oil flow and lead to low oil pressure.

It is recommended to have the vehicle inspected by a qualified mechanic to diagnose and resolve the issue. They will be able to perform a thorough examination of the oil pressure system and determine the exact cause of the problem. Prompt attention to low oil pressure is crucial to prevent potential engine damage or failure.