65 plate 1.6hdi Grand picasso auto a

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BugStomper
Posts: 1
Joined: 17 Dec 2021, 15:12
Location: Hertfordshire
My Cars: Citroen C4 Grand Picasso (2016)

2016 C4 Grand Picasso Internal Fan / AC Doesn’t Turn Off

Post by BugStomper »

I hope someone smarter than me can help! This afternoon the internal heating / AC fan on our 2016 C4 Grand Picasso refused to switch off. I turned it on to clear the windows but now it will not switch off, even after the engine is switched off. We still have some control over airflow (but not much), and the same for temperature, but the fan is constantly blowing air into the car.

When the engine is switched off the fan continues to blow for just over two minutes before switching off. And the fans starts again the moment the car is unlocked.

Any help would be greatly appreciated!
dawsons190
Posts: 3
Joined: 11 Apr 2022, 20:39
Location: Beverley
My Cars: C4 grand picasso 1.6hdi 65 plate

65 plate 1.6hdi Grand picasso auto a

Post by dawsons190 »

The ventilation fan will not shut down until the ecu powers down after 3 mins. unable to adjust the speed, the fan powers up when the car is unlocked. had it dia ag checked at a garage with a snap on tool alas it showed no faults. Any help would be most helpful Steve.
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GiveMeABreak
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Re: 65 plate 1.6hdi Grand picasso auto a

Post by GiveMeABreak »

If you are saying the fan is on constantly when the vehicle is started, and won't change speed, it may likely be your Blower Motor Control Module that needs replacing.
Please Don't PM Me For Technical Help

Marc
dawsons190
Posts: 3
Joined: 11 Apr 2022, 20:39
Location: Beverley
My Cars: C4 grand picasso 1.6hdi 65 plate

Re: 2016 C4 Grand Picasso Internal Fan / AC Doesn’t Turn Off

Post by dawsons190 »

I have the same problem , What was the fault?
dawsons190
Posts: 3
Joined: 11 Apr 2022, 20:39
Location: Beverley
My Cars: C4 grand picasso 1.6hdi 65 plate

Re: 65 plate 1.6hdi Grand picasso auto a

Post by dawsons190 »

HI Have the same problem, showing no faults on the diag, however had to take it to a citroen[ dealer it was the ventilation control module Citroen part number 9821291880 control module Retail at 131.02 plus vat
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GiveMeABreak
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C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
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Re: 65 plate 1.6hdi Grand picasso auto a

Post by GiveMeABreak »

Yes, that is actually the Heater / Blower Motor Control Module that I mentioned earlier.
Please Don't PM Me For Technical Help

Marc
Putonewry
Posts: 3
Joined: 12 Sep 2022, 13:59
Location: Newry northern Ireland
My Cars: CITROЁN C4 II Grand Picasso 1.6 HDi / BlueHDi 115 Diesel 115 hp / 85 kW
RENAULT Laguna III Sport Tourer (KT) 1.5 dCi (KT0A) Diesel 110 hp / 81 kW

Re: 65 plate 1.6hdi Grand picasso auto a

Post by Putonewry »

HI,
I have similar problem, but my fan can be adjusted, I can change speed of fan, and direction, temp etc, but when I turn it off fan never stop (it is going on same speed as auto)
Putonewry
Posts: 3
Joined: 12 Sep 2022, 13:59
Location: Newry northern Ireland
My Cars: CITROЁN C4 II Grand Picasso 1.6 HDi / BlueHDi 115 Diesel 115 hp / 85 kW
RENAULT Laguna III Sport Tourer (KT) 1.5 dCi (KT0A) Diesel 110 hp / 81 kW

Re: 65 plate 1.6hdi Grand picasso auto a

Post by Putonewry »

Hi,
I bought one made by NRF (it is identical as original DENSO), but it wont start a fan. Is it possible its not working because it is not genuine or it could be other fault.
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GiveMeABreak
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Joined: 15 Sep 2015, 19:38
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C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5644

Re: 65 plate 1.6hdi Grand picasso auto a

Post by GiveMeABreak »

We see a lot of this sort of thing here - non-genuine parts are often faulty or just don't work.
Please Don't PM Me For Technical Help

Marc
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