Anti pollution warning which clears after about 30 seconds

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

Contributor
Posts: 11
Joined: Sat Jul 20, 2013 4:06 pm
Model: C3 2006-2009, Facelift model
Year: 2007 (07)
Engine Size: 1.4 i
Fuel Type: Diesel
Mileage: 104000
Trim Level: Desire
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
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My C3 starts perfectly but after about 20 seconds I get the anti pollution warning light, which clears after about 30 seconds

Several people on this forum suggest replacing or cleaning the MAP (manifold air pressure) sensor. Europart are selling them with a bank holiday discount for £40.94 (Product Code : 420540130)

I'd like to have a go at cleaning it first but I'm damned if I can find it on my Citroen, below is a link to a photo of my engine, I'd be very grateful if someone could point me in the right direction


Many thanks
Attachments
C3 HDI Cool engine.jpg
My Name: routemaster1

C3 Master
Posts: 216
Joined: Fri Mar 08, 2019 4:32 pm
Model: C3 2017-on. The new C3
Year: 2019 (19)
Engine Size: 1.2
Fuel Type: Petrol
Mileage: 300
Trim Level: Flair
Gearbox: Manual 6 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: EB2DT-EB2ADT PureTech 3-Cylinder (110 PS)
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jerrybuilt wrote: Sun May 26, 2019 4:43 pm My C3 starts perfectly but after about 20 seconds I get the anti pollution warning light, which clears after about 30 seconds

Several people on this forum suggest replacing or cleaning the MAP (manifold air pressure) sensor. Europart are selling them with a bank holiday discount for £40.94 (Product Code : 420540130)

I'd like to have a go at cleaning it first but I'm damned if I can find it on my Citroen, below is a link to a photo of my engine, I'd be very grateful if someone could point me in the right direction


Many thanks
This is a little odd, as the anti-pollution warning is usually to do with the dpf blocking, but you don't appear to have one.
My Name: Citroen-Driver

C3 Master
Posts: 212
Joined: Mon Dec 18, 2017 12:10 am
Model: C3 Pluriel - with or without roof
Year: 2003 (53)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 30000
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: ET3 16-valve (90 PS)
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If you suspect a MAF fault then disconnect it to see if the fault resolves. MAF would give a poor driving experience and disconnecting a faulty one will rectify that.

If the MAF is proven, try cleaning it before replacing it. They's get dirty and a clean can cure some MAF faults.

If you have a fault that isn't cured by disconnecting the MAF, then read the codes.

Use lexia for this on the diesels, but a cheap OBD could work to a point.


Oh, and this is the way to attach pictures to the forum
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