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DPF light and sensor issues

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hi guys, new to the forum. i have managed to get other information by searching the forum but this is my first post so please be gentle.

 

i bought my fabia 2010 estate 1.6 diesel about a month ago which was showing a fault with the exhaust temperature sensor, unfortunately the dealer i bought it off replaced the wrong sensor twice. one of the sensors they replaced was the lambda sensor not sure what the other was. as they were unable to fix it the booked it in at the local skoda dealers who replaced the correct exhaust temperature sensor. i have done about 600 miles since this and yesterday the DPF light came on when travelling home from work. i travelled about 8 miles in 4th gear @20,000 rpm but the light stayed on. today i took the car for a 40 mile run along the motorway, 20 miles one way turn around at the roundabout and 20 miles back this was all at aprox 70mph 20-25000 rpm but the light is still on.

is this normal for DPF regeneration as i thought it would have reset. this is the first diesel i have owned for 10 years and the first with DPF.

thanks for reading and any suggestions would be appreciated.

"i travelled about 8 miles in 4th gear @20,000 rpm" and "20 miles back this was all at approx 70mph 20-25000 rpm".  Your car has a more robust engine than mine to if it survived this treatment! :|    Perhaps you meant 2,000rpm and 2,500rpm?

 

In over 30K miles my car has never required other than normal driving to prevent any DPF problems.

I have had 2 different sensors changed and a new egr valve. All 3 times there was just the orange coil light (glow plug) showing . I have never seen the dpf light come on during driving. I think it needs to to be plugged in for a diagnosis at a skoda dealer. I have done 43000 miles in 4 years.

Edited by m8t

  • Author

yes sorry it was 2000-2500, this was in 5th gear that i travelled 40 miles. in the hand book it recommends a 15 minute run between 1800-2500 rpm to assist the engine when the light comes on, i have doubled this and the light is still on which makes me think there is not normal and there could be another fault. 

I hate these DPF's, I would suggest even more engine revs, these small diesels like to be driven hard. Make sure oil is up to temperature and then drive at 70 at about 3500 rpm until light goes out or you get fed up. If it still doesn't go out I'm afraid it'll be a trip to the garage. FYI I saw a video on youtube of a bus DPF being taken off and baked in an oven at 350C for the regeneration cycle and then blown out in a special vacuum/airline encloser.

  • 3 weeks later...
  • Author

DPF light on = blocked DPF.

 

a day after posting and trying to run at higher revs the glow coil light and engine light also came on and the car went into limp mode.

this was checked out at the main dealers who diagnosed a blocked DPF and replaced it, thankfully under warranty as this is one expensive job!

had the car back two weeks now and it seems to be behaving itself now. 

Glad it got sorted, Debating getting mine removed

Edited by jimdiesel

you were lucky, pdf's are considered consumables so not usually covered by the warranty. had you owned it from new, you'd have had to pay yourself. i guess its different rules on a used car as it must be proved not to be faulty be the dealer and a blocked dpf is faulty. not sure if they'd have replaced it though or just done forced regen, via computer on workbench, running engine hot then injecting fuel to burn off soot. its normal for light to come on and to need faster runs but as they get older, they seem to offer a shorter space of time from light coming on and going into limp mode. perhaps as the dpf fills, it never really burns enough off to breathe fully, in the same way an old battery will "charge" but never reach the same capacity of charge as a fresh one and will weaken over time till it fails.

Maybe true,

but lets see which 1.6TDI Euro 5 Emission Engines get what 'Fix' by VW,Skoda,Seat,Audi due to the Defeat Device Cheat issue.

lets see what they had to do with the Engine Management (ECU Software) and EGR / DPF to get the Emissions they officially gave.

 

Many might get new ECUs, Injectors, EGR Valves, DPF's etc depending what the Fix needs to be,

maybe refunds on Money they spent because VW / Skoda had them believing blocked DPF's where just one of those things,

tough luck, pay up and bog off.

My light popped up today.

So I did a motorway drive in 4th at 2,000rpm (approx. 60mph) for around 20 miles, light went out, job done!

My light popped up today.

So I did a motorway drive in 4th at 2,000rpm (approx. 60mph) for around 20 miles, light went out, job done!

You seem quite pleased at that

Driving round and round to remove a warning light on a car designed to be fuel efficient

A totally unacceptable practice IMHO

I used to take mine on local bypass - 5 miles with the revs over 4000 usually cured it until the day I realised how ridiculous the whole idea was

Petrol all the way now. :)

Diesel's aren't supposed to be used for pottering around town because of dpfs they need motorway/dual carriageway runs to work correctly and clear the dof luckily I do regularly so haven't had any problems yet.....Touch wood lol

Sent from tapatalk using string and a cup

We've just bought a Seat Ibiza 1.6CR TDI Sport  (105PS) '10' plate with 75k on the clock - had it just under a month and have had the flashing glowplug light three times this week plus limp mode (but no DPF light).  Turn engine off and restart and all is back to 'normal'.

 

I took it back to the dealer/trader we bought it from today, suspecting EGR fault however on his Snap On diagnostics, fault came up as '7679 Oxygen Lambda Sensor' which we were both surprised by.  No other faults came up.

 

I didn't know that modern common-rail diesel engines have a lambda sensor?  Dealer said he would replace offending sensor but just wondering if this is masking other issues, as fuel consumption and performance are disappointing, especially as these engines are supposed to be very economical.....

 

Just wondering if a faulty Lambda sensor will affect fuel economy and performance - anyone else had similar issues with their Fabia??

 

Thanks

 

Dan

Diesel's aren't supposed to be used for pottering around town because of dpfs they need motorway/dual carriageway runs to work correctly and clear the dof luckily I do regularly so haven't had any problems yet.....Touch wood lol

Sent from tapatalk using string and a cup

 

a diesel car should be able to be used for short journeys imho

a cars purpose is to get you from a to b

whether this is 3 miles or 20  is irrelevant

any car that cant do this on a normal tarmac road in my opinion is therefore `unfit for purpose`

when i bought the diesel monte at no point was I ever informed by Skoda of what a dpf was,neither did I imagine someone would invent something so limiting

by the time I saw the mention of `dpf` in the brochure it was too late

I would go as far as to say I was mis-sold a car..... i e unfit for purpose

I even tried to catch Martin Lewis when he was at Meadowhall but he only wanted to talk to people on camera regarding energy bills

 

At some point someone somewhere is going to catch on to this and let the floodgates open      :devil:

a diesel car should be able to be used for short journeys imho

a cars purpose is to get you from a to b

whether this is 3 miles or 20 is irrelevant

any car that cant do this on a normal tarmac road in my opinion is therefore `unfit for purpose`

when i bought the diesel monte at no point was I ever informed by Skoda of what a dpf was,neither did I imagine someone would invent something so limiting

by the time I saw the mention of `dpf` in the brochure it was too late

I would go as far as to say I was mis-sold a car..... i e unfit for purpose

I even tried to catch Martin Lewis when he was at Meadowhall but he only wanted to talk to people on camera regarding energy bills

At some point someone somewhere is going to catch on to this and let the floodgates open [emoji317]

True in that point I bought mine fully aware of the dpf I always thought that the salesmen were suppose to inform you these days maybe I'm just nieve lol saying that I only buy cars @ 3 yrs old

Sent from tapatalk using string and a cup

a diesel car should be able to be used for short journeys imho

a cars purpose is to get you from a to b

whether this is 3 miles or 20  is irrelevant

any car that cant do this on a normal tarmac road in my opinion is therefore `unfit for purpose`

when i bought the diesel monte at no point was I ever informed by Skoda of what a dpf was,neither did I imagine someone would invent something so limiting

by the time I saw the mention of `dpf` in the brochure it was too late

I would go as far as to say I was mis-sold a car..... i e unfit for purpose

I even tried to catch Martin Lewis when he was at Meadowhall but he only wanted to talk to people on camera regarding energy bills

 

At some point someone somewhere is going to catch on to this and let the floodgates open      :devil:

Totally agree. My sitation is exactley the same. If I could go back in time to 2011 when I bought my DPF cursed car I would get a one year old 1.9tdi fabia instead. Cost of chopping in prohibits changing.

 

Octaviadan, yes I have had the lamda sensor replaced and an egr valve and a exhaust gas temp sensor.

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