Engine Management Light & Service Light Comes on When Turning Heating on!

Questions specifically about a Diesel powered C3 (usually engine or fuel related problems)
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My Name: DigitalEmotion76

Member
Posts: 2
Joined: Mon Oct 08, 2018 9:51 am
Model: C3 Picasso
Year: 2014 (14)
Engine Size: 1.6
Fuel Type: Diesel
Mileage: 27000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)

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So my Citroen Picasso C3 (2014) has an intermittent issue. When you put the air blowers on the service light flashes up and the display reads "Engine Fault Repair Needed". The service light used to flash up intermittently every now and on various drives but it did switch itself off. However now, its now happening all the time, as soon as I put the heaters on. By the way the car has been serviced by Citroen this year and I have a good few months left.

What's actually happening now is the engine management light is permanently on, so as soon as I start the car up the message "Engine Fault Repair Needed" is on and will not go off. If I put the heaters on the service light still comes on after 5 seconds or so and will turn itself off if I turn them off, but not the engine management light is staying on.

I took it to a local garage who diagnosed the fault as the "Throttle Body". He cleaned it out as it had a lot of carbon in it, and must have reset the engine management light, and It was good for about two days - however I didn't touch the heaters over these two days and now, today, as I put them on the same thing happens, and I'm back to square one with the permanent engine management light on and warning message. I called them to find out if it could be anything else they could check but they said the code only read "ThrottleBody". Which they cleaned out.

I suspect there could be a faulty sensor that is causing this to happen, or some kind of short. But I'm stuck as what to do? I am going to buy my own diagnostic tool either way. My options seem that I keep throwing money at local garages who will go round in circles grabbing at straws, or take it direct to Citroen, who will charge a fortune. :cry:

ANY help would be massively appreciated.
Thank you.
Steve
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My Name: C3CAR

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Posts: 2614
Joined: Wed May 04, 2011 10:01 am
Model: C3 2002-2005, Original shape model
Year: 2002 (02)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 140000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Been thanked: 88 times

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DigitalEmotion76 wrote: Fri Dec 14, 2018 4:08 pm I am going to buy my own diagnostic tool either way
Hi DigitalEmotion76, I would definitely agree with getting your own code reader, something like this KW808 would be ok for reading engine codes.

If you need to get into the other ECUs on the car, you will need access to lexia. But this is a bit more complicated to set-up.
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My Name: Arfur Dent

Guru
Posts: 3303
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
Has thanked: 258 times
Been thanked: 111 times

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DigitalEmotion76 wrote: Fri Dec 14, 2018 4:08 pm I took it to a local garage who diagnosed the fault as the "Throttle Body". He cleaned it out as it had a lot of carbon in it,
There is no throttle body on the diesel engines. I think you have not been given the correct information.
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