Hey all

I've got a Fabia MK2 Monte Carlo 2012 1.6 Diesel

Just passed 77777 miles, passed it's MOT in January and had a service last month.

 

Had the flashing glow plugs whilst driving and then eventually the exhaust light came on (and is now on permanently) I've got a cheapo diagnostic OBD tool and got the P242B code. The car has NOT gone into limp mode and is driving fine as far as can tell (though I'm not doing any long journeys currently)

 

I'm wondering if this is just a case of replacing the exhaust pressure sensor? (I've seen that it's located underneath the car near the radiator based off a YouTube vid) I've seen you can get one off eBay for fairly cheap or is this meaning there is something seriously wrong with the car? The fact that it's driving fine and passed its MOT makes me hope it's just the sensor going duff. The only other thing is that I've never really took the car for a long drive after the DPF light comes on (the light clears itself even after a short drive and I know it won't be long enough to clean the filter)

I've seen a similar post on here but it was from years ago with a car that wasn't as old so wondering if anyone else can give an opinion or other things I can look into?

Thanks for you help.

3 minutes ago, emdotdee said:

you can get one off eBay for fairly cheap

Sure, but "buy cheap, buy twice" applies to most Fleabay parts.

You need to drive the car further and faster to clear the DPF properly.

 

It is highly unlikely to be a sensor issue.

12 minutes ago, KenONeill said:

Sure, but "buy cheap, buy twice" applies to most Fleabay parts.

I know that, but based on a previous post from 2013

 A new sensor is what's solved the issue. I can get one and try it with little pain if that'll solve it. With the car 9 years old I was hoping to see if anyone else that had a similar issue before might have remembered what their solution was?

16 minutes ago, sepulchrave said:

You need to drive the car further and faster to clear the DPF properly.

 

It is highly unlikely to be a sensor issue.

Based on the handbook I'm not supposed to drive the car for long now that the light has come on (even though it's not in limp mode) 

The DPF light hasn't come on so should I try giving it a long drive to burn it off and reset the code or is there another way to clean out the filter first if I can get the car on a ramp?

Take it for a long, fast drive and reset the code.

 

Why waste money on unnecessary repairs.

I'm not sure you have the correct location, which youtube video did you view?

I'd think on your engine it would be somewhere at the back of the engine bay, high up.  Find it and visually inspect it, as a first step.  They have been known to melt.

Edited 9 July, 20214 yr by Wino

5 minutes ago, Wino said:

I'm not sure you have the correct location, which youtube video did you view?

I'd think on your engine it would be somewhere at the back of the engine bay, high up.  Find it and visually inspect it, as a first step.  They have been known to melt.

Sorry. The video (that has the same flashing lights) he fixes some wires at the MAP sensor which is underneath. 
 

The sensor I thought was the problem is this

https://www.ebay.co.uk/itm/Bosch-Exhaust-Pressure-Sensor-Fits-Skoda-Fabia-Mk2-1-6-TDI-UK-Stock-/183963107916?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=710-127635-2958-0

but I can’t locate it in the engine bay. I’ve taken the plastic but off the top of the engine and still can’t tell where it is. 

You'll have to keep looking. Take some photos of the engine bay from high up, in good light and post them here. Someone may be able to spot it.

I’ve found it. It’s in an awkward place right at the back. 

Can you get a photo?

Hang on a sec!

I just looked up that fault code; and it relates to one of the exhaust temperature sensors, not the pressure sensor?

Where did you get the idea it was the pressure sensor?

Edited 9 July, 20214 yr by Wino

15 minutes ago, emdotdee said:

Whats with the ziptie and the chopped hose? Mines like that, I thought it was just from removing the dpf. Is it just how they are?

(Sorry if I'm hijacking a thread)

I’ve probably searched the wrong thing after reading the handbook and the Haynes manual sorry! Please be patient with me 😩

 

Is it the Lambda sensor giving this error then? I’m sure I’ve read that these need replacing near 80k but I’m prob wrong on that. 
 

Do you think giving the DPF a proper cycle will sort it?

3 minutes ago, DieselMonte said:

Whats with the ziptie and the chopped hose? Mines like that, I thought it was just from removing the dpf. Is it just how they are?

(Sorry if I'm hijacking a thread)

Based on other photos I’ve seen from a different engine that’s just how it is #shrugs#

4 minutes ago, DieselMonte said:

Whats with the ziptie and the chopped hose? Mines like that, I thought it was just from removing the dpf. Is it just how they are?

(Sorry if I'm hijacking a thread)

Yep, normal, as it left factory I believe.  There are quite a few threads on here querying this.

Exhaust gas temperature sensor number 3 is what google tells me about that fault code.  Not uncommon to find this failure discussed on Briskoda, if memory serves.

Not lambda sensor.

 

Do some more research, I suggest.

Edited 9 July, 20214 yr by Wino

Is there any way I can force the car into Regeneration mode?

I've got nothing on tomorrow so could go for a long drive to try and clear the DPF filter - I only use my car for short drives so I don't think it's ever got up to temperature enough to properly clear it when the light has come on before.

You might be able to use the OBD tool to do a forced regen but the most reliable method is to get the exhaust system properly hot by doing some motorway miles, the EGR valve may be coked up and not shutting fully but short of stripping it you'll just have to give it a try.

Thanks, the cars not in limp/idle so will give it a good drive tomorrow and see how it goes. I don't think my OBD tool is sophisticated enough to force the Regen.

Edited 10 July, 20214 yr by emdotdee

Fella with a very similar fault code who sorted it here: Fabia 2011 1.6tdi 75ps exhaust gas temperature sensor - Diagnostics & VCDS - BRISKODA

So I cleared the code and went for a long drive in 4th gear up and down the motorway. Car felt fine, didn’t notice any regen happening and the DPF light hasn’t come on but now 12 days later the coil light is now flashing again with the p242a error bank 1 sensor 3 like said above. 
 

I can find the part to replace it online but where is it located in the engine? My dad has all the tools I would need to get it replaced and a ramp if I need to get underneath but struggling to find the relevant plug to locate it in the engine bay. 
 

 

Did you look at the post I linked to in my last reply? Thought there were pictures in there?

Yes there’s photos of the part but not the engine bay 

Sorry, false memory on my part, will try to find whichever thread it was I saw that did have some photos.