2015 ds3 165 dh sport aircon fault

[paulliver]

As above turned aircon on today coming home from work there was a bleep and an error message engine fault repair needed then service light came on
Put it in the garage left it 10 mins service light had gone off engine running fine soon as i turn the aircon on again same fault appers
Will be going back to the dealers monday/tuesday only had it 2 weeks

[paulliver]

Just been in the car no service light or any warnings
Parked in the car park thought ill try aircon again and as soon as the temp starts to get cool the warning comes on again and service light on
Will let u all know what it is when shes gone back to citroen
Cheers

[marinipersonal]

Had same symptoms with the THP Peugeot RCZ. My problem was battery. Never expected that, but the battery wasn't holding enough charge so anything putting extra stress in the system was causing the fault. Not really expecting the fault to be the same for a 1 year old car. Mine was 3 years and driving just early mornings, late nights and heated seats, etc.

[paulliver]

Could well be the battery as i only drive 5 miles to work on a morning then 5 miles back its not had a fairly long run only bringing it back from hull 2 weeks ago which was 60 miles

[paulliver]

Also noticed that the stop start works now and again and the eco light flashes twice but car doesnt stop which vould lead to a faulty battery also ????
No going far enough to charge the battery fully each day ???

[lfcrule1972]

Mmm I would suspect the battery is struggling with your limited mileage if I'm honest. The next issue will be the DPF filter, with your mileage this won't be getting hot enough to run a cleaning cycle and it will become blocked with particulates....

[paulliver]

Whats a dpf filter ????
And whats a cleaning cycle ???

[cyclone]

Whats a dpf filter ????Diesel partial filter
And whats a cleaning cycle ???Commonly known as a regeneration. The DPF traps the soot produced in your nasty diesel and as it becomes more and more filled with the soot blocking the flow of exhaust the cars computer injects some cleaning fluid and runs the engine so the exhaust if very hot. This burns off the soot, cleaning the pdf out so the process can start all over again. For the car to run this cycle it needs a longer drive so it has time to complete the cleaning process. Obviously the simplified version.

.....

[Chris_Blue]

And you didnt say "Look in the manual" once Cyclone. Your slipping you old Yank living in Deutscheland....

[paulliver]

Its a petrol engine

[Jan79]

.....

I'll teach you to call our sweet HDI's nasty diesels.

[paulliver]

So what could i do if the battery isnt getting fully charged maybe change it for a heavy duty ?????

[lfcrule1972]

Its a petrol engine

My mistake, your profile says it's a 1.6 hd airstream, I believed therefore it was a HDi (diesel)

[paulliver]

Ahhh that was my old ds3 got a new one now

[marinipersonal]

My symptoms with a similar engine (THP RCZ): random warning messages. At some point wasn't even able to operate the electric windows or lock/unlocking using the remote.
Replaced the battery, using one with a bigger capacity, sorted. After change jobs, didn't have to drive in similar conditions, so the battery didn't gave me any trouble.
Only problem after that, but you shouldn't worry so early was the fuel pump, just before failing giving few errors, replaced, sorted.
I would try to give it a good charge. Don't believe the battery is giving up yet. May need an upgrade if carry the same driving routine, or at least some battery charger if in fact the problem is the battery.