General Engine Dysfunction

Faults and Technical chat for the Citroen C4 Cactus
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thetapeworm
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General Engine Dysfunction

Post by thetapeworm » Sat Apr 20, 2019 12:02 pm

Mainly posting for future searches on this as it seems like this isn't discussed much. I know there is another topic where its mentioned but there doesn't seem to be a definitive answer.

My wife's diesel is due a service but after putting fuel in it suddenly came up with the message below. An ODB2 check reports no logged faults and the engine management warning light in the dash isn't lit.


Faulty Engine Control System:

Avoid using your vehicle until it has been serviced by a Citroën dealership.

Screenshot_20190420-115119_My Citron.jpg

rps20190420_115649.jpg


I was hoping to get the car serviced at a local specialist rather than a main dealer (Leeds) but nobody seems to be able to recommend one.

In light of this message I'm now feeling like I'll have to go to the dealer... but is this their cunning plan?
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routemaster1
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Re: General Engine Dysfunction

Post by routemaster1 » Sat Apr 20, 2019 12:23 pm

We had this on a diesel C3. It was a faulty injector Luckily covered by extended warranty. Depending on when in 2016 yours was registered it may still be under manufacturer's warranty. I would suggest an agent as first call.

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Re: General Engine Dysfunction

Post by thetapeworm » Sat Apr 20, 2019 9:12 pm

Typically the warranty ran out the week before this happened but I appreciate the feedback.

We might have to bite the bullet with the main dealer this time :(
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Re: General Engine Dysfunction

Post by berapotter » Mon Apr 22, 2019 5:18 am

Being a little bit cynical, I would use the car a time or two just to make sure the fault message keeps appearing.
I have had erroneous lights coming on occasionally over the years and then clearing never to be seen again,
Previous citroens used to store fault codes for around 10 starts and then clear.My cactus currently loves to tell me that I have an ABS fault. This always shows after I have altered my tyre pressures and reset the TPMS.Previous C3 twice told me the MAF was faulty. Car is still running with 140000 miles still with original sensor.
The more sensors and "clever" the cars get the more sensors to go wrong, ever seen predictive text in action😁
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Re: General Engine Dysfunction

Post by thetapeworm » Mon Apr 22, 2019 11:32 am

After my wife's initial panic phone call from the garage forecourt the car has been in regular use, been refuelled again and seems absolutely normal in all respects. The error on screen (and the app) won't go away and my fairly limited OBD2 reader can't see any issues, a code reset has no effect so presumably the Citroën kit handles this.

I know I can reset the service light and am tempted to see if it also makes this go away but I'd prefer not to. Currently planning a non Citroën service & brake pads and if this persists to go to them with just this so my wallet isn't too upset.
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Re: General Engine Dysfunction

Post by thetapeworm » Wed Apr 24, 2019 4:09 pm

Service completed today (non-Citroen) so that's out of the way at least.

Called the local dealer (Evans Halshaw) to enquire about the "General Engine Dysfunction" message to be told it could mean anything and that I need to book it in for a £50 diagnostics check, the earliest date being in May.

I don't see what alternative I have as presumably it has to go on a Citroen diagnostics machine given nothing is being picked up via the regular OBD2 scanner and, based on what I've read on here, it might need a software update to fix this. Presumably this would cost me on top of the £50 given the car is now 3 years old?

This is why I choose to drive old cars :)
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Re: General Engine Dysfunction

Post by thetapeworm » Mon Apr 29, 2019 10:19 am

I grabbed a copy of FAP from the Amazon app store and paired it up with my reader, it came back with more specific codes than Torque.

Screenshot_20190428_200502_com.fap.c.faplite-01.jpeg

Given the fault started right after filling up with diesel I'm intrigued by this.
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Re: General Engine Dysfunction

Post by routemaster1 » Mon Apr 29, 2019 11:44 am

I have had a similar fault in our C4 Picasso, and many others on the C4 forum have had this issue. The issue here is it is not clear if the fault is with the EOLYS pump or the Adblue pump. If it is the Adblue pump, the agent solution will most likely be a new Adblue tank, as it appears the pump is not available separately. Sorry, but it is likely to be expensive.

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Re: General Engine Dysfunction

Post by thetapeworm » Tue Apr 30, 2019 3:41 pm

Thanks for your reply, even if it's potentially bad news :)

Seems somewhat ridiculous for a part like this to fail after 28,000 miles, the thing that's got me wondering is why it happened right after she put diesel in it. No issue, diesel in, error codes, the timing seems incredibly suspect.
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Re: General Engine Dysfunction

Post by thetapeworm » Mon Jun 03, 2019 3:30 pm

Ran some logging with FAP on Sunday, if the app is to be believed the car has used 5ml of AdBlue in a month, we've done a fair amount of miles / journeys in that time so something is clearly afoot.

I need to check fuses and have a bit more of a poke around, I'm not quite defeated yet but the more time goes on the more I worry.

Still loathed to take it to Citroen but would happily drive to a specialist outside of the Yorkshire area if anyone has solid recommendations, I just don't want to be paying for silly diagnostics and then a fix by numbers solution where they essentially rebuild the entire car using expensive off the shelf bits.
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