[dominic001]

Hi all, hoping someone can shed some light or share a similar experience. Here’s a breakdown of the issues I’ve been dealing with:

What I’ve Done So Far:

• Replaced the oil pressure sensor
• Replaced the oil filter
• Refilled with fresh 5W-30 (correct spec)
• Oil level is correct and up to the fill mark

The problem

• The yellow oil pressure light comes on after ~30 miles of driving
• No noticeable engine noise or performance issues when the light comes on
• Oil level remains fine
• This only happens after the engine is hot, which made me suspect a real drop in oil pressure (possibly due to oil thinning)

What i have found out while trying to diagnose

• After driving and letting the car idle, I noticed the radiator fan never turns on
• Even when the A/C is switched on, the fan does not activate
• I found a loose 3-pin female connector near the fan area and another taped-up wire near the battery and headlight area
• I traced the fan wiring and suspect that the fan motor or control module is not connected properly
• It's possible the fan has been disconnected or cut in a previous repair attempt

My Current Theory

• The radiator fan not activating causes the engine oil to get hotter than it should
• Hotter oil = lower viscosity = lower oil pressure
• This might be what’s triggering the yellow oil light after extended driving, even though oil level and sensor are fine

I am a novice when it comes to cars, as this is my first car and want to look after it. Looking for help if anyone has had any similar problems.