Renault Koleos - Check injection warning but car fine and no errors

Honest John Back Room » Technical matters
View Threaded
Fri 2 Mar 2018 16:47
Renault Koleos - Check injection warning but car fine and no errors - Mrs A O'Connor

HI, this is driving me nuts! I can find lots of posts about warning lights but none that seem to match my issues.

Four weeks ago I filled up with Asda diesel and I got a 'Check Injection System/Emissions' message (with spanner). Car went into limp mode so I plopped a bottle of Redex DPF cleaner in. Took car to garage and light went out on the way. No error codes found once plugged in. Car was fine for next two weeks.

Filled up again at Asda with diesel. Message comes on again. Another bottle of Redex in but this time nothing. Message still there but no limp mode and car driving perfectly fine. No error codes. However it has been over a week now and I'm starting to get worried. Anyone have this experience before? Been really cold so not sure if that's been of no help! Thanks

Reply | Report as offensive | Link
Fri 2 Mar 2018 17:17
Renault Koleos - Check injection warning but car fine and no errors - hardway

Renault's like all French vehicle can be a b*****.

If the lamp is on then there's a fault code in the ECU.

I'm wondering what system your guys used to check it?

The only one I use and trust on these is "CanClip",

Renault's own diagnostics.

Reply | Report as offensive | Link
Fri 2 Mar 2018 20:54
Renault Koleos - Check injection warning but car fine and no errors - Mrs A O'Connor

Hi, can I double check what you mean by lamp is on. I have a message on my display and the yellow spanner is lit up - the one that lights up when a service is due for example.

Sounds like I might need to get the ECU read again then. Thanks

Reply | Report as offensive | Link
Fri 2 Mar 2018 22:48
Renault Koleos - Check injection warning but car fine and no errors - KJP 123

I can understand how you thought the Redex had cured the problem but I am not sure that I would not have started to use a premium branded fuel.

It may , and I must emphasise may, be a false warning.

Reply | Report as offensive | Link
Tue 6 Mar 2018 14:12
Renault Koleos - Check injection warning but car fine and no errors - Mrs A O'Connor

Been to a different garage today. They hooked up their computer to my car and the message given was something along the lines of 'Failed maximum number of regenerations'. They suggested maybe giving the car a thrash in a low gear.

Not sure what to do now! Is it worth having the filter cleaned? Or is there another additive I could try (not sure if I've gone beyond that now?) I certainly don't want to be buying a new one as that could be more than the car is worth! Thanks

Reply | Report as offensive | Link
Tue 6 Mar 2018 15:20
Renault Koleos - Check injection warning but car fine and no errors - hardway

So that'll be the DPM choked up with soot!

There are dedicated DPM cleaners that get sprayed into the unit,

I'd say use "Wurth" DPM cleaner.

Reply | Report as offensive | Link
Wed 7 Mar 2018 11:48
Renault Koleos - Check injection warning but car fine and no errors - Nicholas Dixey

Dear Mrs O'Connor

You actually knocked the nail on the head in your first submission: Asda diesel.

Supermarket fuel is fine occasionally but in the long run it will probably damage a vital component like your turbocharger. It happened to us and more than wiped out any saving we'd made over using proper, petrol station diesel.

Since then we use about 75% Shell V-power or BP Ultimate and I recommend this to you. Your car will feel a lot livelier, will use less fuel to balance the extra cost but vitally, will have a cleaner engine internally. I had a problem with my old Fiat diesel (102,000 miles and on its way to twice that) and my garage man took out one of the injectors to have a look. He said it was the cleanest he had ever taken out of a car.

This fuel is expensive compared to supermarket fuel but over a period it could save you hundreds, perhaps more.

Reply | Report as offensive | Link