Oil Pressure Warning Light On Startup

[barrywi]

My 60 registration Fiesta Titanium Diesel ( 5000 miles on the clock)has a fault where the oil presssure warning light stays on for longer than normal on cold engine startup, causing the chime to go off once and a warning to appear for about a second. oil level is fine , Ford have replaced the oil pressure sensor switch so does anyone have any idea what else may cause this problem? Engine runs well and without a circuit diagram it is hard to tell what else is in the chain between sensor and warning system. I do not think it is serious but if I tried to sell the car it may put someone off buying. Car will go back to Ford for assessmentas it is under Ford Direct warranty, just want to point them in the right direction.

[james_60]

Hi Barrywi

Ford Customer Relation Centre if it is still happening.

How long have you owned the car.

Jamie

[barrywi]

Hi Barrywi

Ford Customer Relation Centre if it is still happening.

How long have you owned the car.

Jamie

We have had the car since early this year, bought from Ford Direct. My local Ford garage will take it back in about two weeks when we come back off holiday. They say they have never seen this fault before on any Fiesta( hence the posting) and are contacting Ford Technical for help.

[Ricco]

Hi did you manage to find out what was causing the oil pressure warning light to come on first start?

I have a 2011 Ford Fiesta 1.6 TDCI . On the first start up in the morning the oil pressure light will come on for a split second with a chime then go off this only happens in the morning on the first start and never comes on again throughout the whole day. This happened approximately 6 months ago. We done a oil pressure check with test gauge by removing the switch and found the oil pressure was fine. So put it down to the oil pressure switch which we replaced and it resolved the fault. However 6 months later it has started doing the same thing again. So we thought the switch might be faulty and got another one from Fords but its still doing the same thing. Ideas what it might be?