Engine warning light - 2007 Fiesta Deisel

[Deleted User]

Hi guys,

The girlfriend bought a really tidy little diesel Fiesta today and all is well except the amber engine warning light stays on... there are no other dash issues and the car has literally just had its mot and service. The garage have said, and without looking at it, that the warning is on because the door sensors need replacing - which they are being, mid-week.

I've only ever had an engine warning light come on, on me once before and that led to the car (a 2005 Golf) needeing a load of electrical work, and ultimately a new ecu... I wrote it off not long after. Personally, I've never heard of a door open sensor causing the engine warning light to stay on? But then I've never owned a Ford, so I thought I'd ask

Any ideas?

motorguy

slipd wrote: »

Hi guys,

The girlfriend bought a really tidy little diesel Fiesta today and all is well except the amber engine warning light stays on... there are no other dash issues and the car has literally just had its mot and service. The garage have said, and without looking at it, that the warning is on because the door sensors need replacing - which they are being, mid-week.

I've only ever had an engine warning light come on, on me once before and that led to the car (a 2005 Golf) needeing a load of electrical work, and ultimately a new ecu... I wrote it off not long after. Personally, I've never heard of a door open sensor causing the engine warning light to stay on? But then I've never owned a Ford, so I thought I'd ask

Any ideas?

I'd be very surprised if an engine warning light came on because of a door sensor?

It would need the codes read and acted upon, but i suspect the dealer may just try to clear the codes and hope it doesnt come back on.

[Deleted User]

motorguy wrote: »

I'd be very surprised if an engine warning light came on because of a door sensor?

It would need the codes read and acted upon, but i suspect the dealer may just try to clear the codes and hope it doesnt come back on.

Thanks motorguy! I thought the same... I've got a neighbour that I'll ask tomorrow, he's got all the electric toys. She's within her rights to get it sorted, right?

Grey_Critic

As Motorguy has said it needs the codes reading but the tale about the door sensors is just a load of waffle unless there is an underlying problem with the electrics they have not told you about. Why does it need door sensors replacing? One yes but two, three etc. Has it been in an accident?

forgotmyname

Fresh MOT with the engine light on?

[Deleted User]

forgotmyname wrote: »

Fresh MOT with the engine light on?

Literally... last week I think? No advisories. Its been serviced since, would a battery disconnect account for it I wonder?

d123

slipd wrote: »

Literally... last week I think? No advisories. Its been serviced since, would a battery disconnect account for it I wonder?

Engine warning light is now an MOT fail, I presume that’s why @forgotmyname asked the question.

Noree

d123 wrote: »

Engine warning light is now an MOT fail, I presume that’s why @forgotmyname asked the question.

It wouldn’t fail an MOT due to the age/type of the vehicle (2007/diesel)

d123

Noree wrote: »

It wouldn’t fail an MOT due to the age/type of the vehicle (2007/diesel)

Interesting that it doesn’t apply to Diesel engines, almost every news article and even on this forum the distinction isn’t made.

For example

chrisw wrote: »

Many Major changes to the MOT test from 20th May 2018 ��

The main changes to be aware of -

Advisories are being replaced with minor fails. You will still get a pass but they will be noted on your test certificate. These are pre written and approved by the DVSA.


Engine Management Light is now a major fail. It must come on with the ignition and then turn off when the engine is started.

Brake pad warning lights are a major fail.

Handbrake with excessive travel is now a major fail. Before it would only a fail if there was no reserve travel.

Contaminated (dirty) brake fluid is a major fail.

Oil leaks (engine, gearbox etc) can be a major fail.

A vehicle fitted with a DPF that emits any kind of visible smoke during the metered test will now fail.

Emissions limits for diesels registered on or after 1st of January 2014 have been reduced. All diesels will now need to pass the limit that was set by the manufacturer when the car was new. This can be found on the VIN plate. For example the current limit for your diesel car may be 1.50. That could change to as low as 0.30 with the new rules.

Noree

d123 wrote: »

Interesting that it doesn’t apply to Diesel engines, almost every news article and even on this forum the distinction isn’t made.

For example

I’ll assume that post is old, as in pre-September 2018? Things changed regarding engine management light/MIL.

July 2003 onwards petrol up to 8 passengers

July 2008 onwards petrol over 8 passengers and diesels.

The brake fluid contamination defect doesn’t apply if it’s ‘dirty’. It has to be contaminated.