Engine malfunction warning and P244C DTC - Page 2

Highway cruser · 28-05-2018, 08:28 AM

Quote:

Originally Posted by cobrin

Thanks for the update bundy

I had to back out of the garage last week cause I noticed mine were doing a regen, fuel consumption display were high at idle ~3L/hr and any pedal input saw it rise from 9L (light input) to 53L (foot flat) and the fan going full tilt, temp nice and hot and slight rough running from normal. So back out I go and give it 'a darn good seeing to'.

Well one massive black smoke cloud from standstill in sport mode 1st gear, must have cleared its bowels cause it settled back to normal after that. I never got to give it a run this week/month will do next weekend.

Have Behana Gorge to check out.

Its interesting that you and others I’ve heard of getting black smoke out the back, I’ve never managed to get any noticeable smoke out the back despite my best efforts.

cobrin · 28-05-2018, 10:39 AM

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Quote:

Its interesting that you and others I’ve heard of getting black smoke out the back, I’ve never managed to get any noticeable smoke out the back despite my best efforts.

yeah my missus has short trips to work and back so it builds up quickly. Just worked it out to 4.5kms each length so 9km return. Very short which is why I try and give it a run on the weekends after the kids sports/grocery shopping/other.

<off topic>
Well I try to organise roadtrips as much as I can, but you know life gets in the way sometimes. Last major trip were in March, Cairns to Townsville return in the same day. It were great with good tyres/timing belt done/new brakes/suspension still performing like a champ....it ate it up like it were nothing

bundybear75 · 28-05-2018, 11:12 AM

Quote:

Originally Posted by cobrin

.

yeah my missus has short trips to work and back so it builds up quickly. Just worked it out to 4.5kms each length so 9km return. Very short which is why I try and give it a run on the weekends after the kids sports/grocery shopping/other.

<off topic>
Well I try to organise roadtrips as much as I can, but you know life gets in the way sometimes. Last major trip were in March, Cairns to Townsville return in the same day. It were great with good tyres/timing belt done/new brakes/suspension still performing like a champ....it ate it up like it were nothing

Mine gets a good run (240km) every day commuting to work. I have not noticed any black smoke from mine but it would burn almost every day.

I found my fuel consumption increased a little after the T belt change but I also got new tyres the same week.

It has felt a little better this week after I changed all the filters and oil last weekend, and has been happier since the vaporiser replacement.

I couldn't believe how black the fuel filter was when it came out. 30K and looked like a dirty oil filter.....

bundybear75 · 27-07-2018, 09:25 PM

So nearly 20,000km since the DPF problems and all is good. Looks like the vaporiser was the problem. I plan to strip the old one down and clean it out as a ready spare in case of problems in the future.

Rondeo, did you get to the bottom of your issues?

rondeo · 28-07-2018, 10:12 AM

P2002 and EML has been a one off so far.

Everything's normal.
Could have been a glitch, snag, quirk or hitch. No Idea.

After reading your post I bought a 22mm crow foot spanner, just in case.

askvictor · 11-05-2021, 06:42 PM

So I got this error a week ago (MC Mondeo), and eventually managed to force a burn to clear it, and have been monitoring the DPF since. I've noticed the soot load goes up to 80-85% (about 8g) every 150-200km, and has done a few burns by itself since then. Is this about right? By chance I was doing a fair bit of highway driving, but am wondering what happens when doing mostly city driving - when the soot load gets up to high levels?

I've also been monitoring the DPF differential pressure - it changes a bit depending on load, but seems to average around 4kpa, but varies from 0 - 12 when running normally.

Have also noticed that the fuel consumption seems to sporadically be higher than normal - I usually run about 5L/100km on the highway, but was up at around 7-8 for a bit, but then dropped back down. This was not during a soot burn btw.

Any thoughts?

rondeo · 12-05-2021, 08:52 AM

Around 80% is the maximum in normal operation, any higher indicates a problem.

A good summary here:

https://www.gotboost.co.uk/p244c-for...ostic-testing/

NZ XR6 · 12-05-2021, 07:24 PM

Interesting thread, this could be the cause of the P2002 DTC on my MB.

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NZ XR6 · 18-05-2021, 06:33 PM

I'm unable to see all of the PID's referred to in this discussion, for example DPF_LOAD is missing from the list in the FORscan app. All I can find is a PID for differential pressure. Is this because I have a MB and selected MY2007.25 when asked by the app?

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bundybear75 · 19-05-2021, 09:09 AM

Quote:

Originally Posted by NZ XR6

I'm unable to see all of the PID's referred to in this discussion, for example DPF_LOAD is missing from the list in the FORscan app. All I can find is a PID for differential pressure. Is this because I have a MB and selected MY2007.25 when asked by the app?

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I could be wrong, but I dont think the MB has a vaporiser like the MC - Doesn't it initiate burns by changing the fuel mixtures in the cylinders? I thought there was an issue of diesel contamination in the oil due to this?

NZ XR6 · 19-05-2021, 11:58 AM

Quote:

Originally Posted by bundybear75

I could be wrong, but I dont think the MB has a vaporiser like the MC - Doesn't it initiate burns by changing the fuel mixtures in the cylinders? I thought there was an issue of diesel contamination in the oil due to this?

You could be right - I've never looked to see if my wagon has one. But I doubt that extra fuel alone could raise the exhaust temperature enough at low speeds to complete a regen.

I have very few regens occur at low speed, but sometimes notice the engine temp changing while driving, which I expect is a regen. Maybe the vaporiser is only used when the extra fuel alone cannot provide enough heat?

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rondeo · 20-05-2021, 08:31 PM

Why not take a look?

NZ XR6 · 21-05-2021, 10:21 AM

Yes, but I'd need to jack up the front of the car!

I expect Bundybear is right. The vaporiser should not affect engine temperature, which certainly happens on my MB.

It looks like they started fitting the vaporiser when the diesel became Euro 5, which happened during 2010. So mine could be either. I tried to check on ETIS but you now need to register as a business to see the vehicle specs, and I couldn't be bothered.

Interesting article here: https://www.eltaeurope.com/techassist-fuel-vaporizers/

They are certainly a better way to do a regen than squirting extra fuel into the engine and hoping!

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rondeo · 27-05-2021, 06:27 PM

It's cheaper than the gym anyway.

Jacking the front should only take a few minutes.
I use two floor jacks with props and think not much of it.

As for removing the undershield a small cordless screwdriver with a 10mm hex drive socket and a picnic blanket from Bunnings.

There's plenty to see having done that.