error emissions ( P0201, P0203, P0204, P0202 )

Questions specifically about a Petrol powered Citroen C3 (usually engine or fuel related problems).
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Petrol engine related faults, like injectors, error codes, overheating.
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My Name: kw1995

Contributor
Posts: 23
Joined: Mon Dec 10, 2018 3:59 pm
Model: C3 2006-2009, Facelift model
Year: 2006 (56)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 115000
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)
Engine name: TU5 16-valve (110 PS)
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Hi,

My 2006 Citroën C3 ( 1.6 16V ) gives an error message saying there is an error in the emissions system.

When diagnosed with an OBD2 scanner it gives me the following codes: P0201, P0203, P0204, P0202

All 4 stating circuit malfunction. I've searched but have only found people who got 1 of 4 faults, but can't seem to find with all 4 codes.

Any ideas what this could be?
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My Name: C3driver52

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Posts: 1877
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 89 times
Been thanked: 66 times

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Hi,

Does it run ok? Not in limp home mode?

What happens when you clear the codes with the OBD reader?
My Name: kw1995

Contributor
Posts: 23
Joined: Mon Dec 10, 2018 3:59 pm
Model: C3 2006-2009, Facelift model
Year: 2006 (56)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 115000
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)
Engine name: TU5 16-valve (110 PS)
Been thanked: 3 times

Post

It runs fine, managed to drive home without any problems. Does seem to be less fuel efficient tough, but no lack of power or whatsoever.
My Name: kw1995

Contributor
Posts: 23
Joined: Mon Dec 10, 2018 3:59 pm
Model: C3 2006-2009, Facelift model
Year: 2006 (56)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 115000
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)
Engine name: TU5 16-valve (110 PS)
Been thanked: 3 times

Post

And i'll try clearing the codes tomorrow.
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My Name: Ozvtr

Moderator
Posts: 956
Joined: Wed Jul 10, 2019 3:31 am
Model: C3 2002-2005, Original shape model
Year: 2003 (53)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 80000
Trim Level: Other
Gearbox: Automatic PRND
DPF: No
LHD or RHD: RHD
Engine name: TU3 (75 PS)
Location: Brisbane, Australia.
Has thanked: 37 times
Been thanked: 256 times

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For there to be a problem on all 4 injectors it would have to be a positive supply problem of some form.
Unfortunately I don't have a circuit diagram for the facelift version.
But the supply will come from one of the multi way connectors on the BSM, the engine bay fuse box. Pull the connectors out and look for corrosion on the pins.
My Name: kw1995

Contributor
Posts: 23
Joined: Mon Dec 10, 2018 3:59 pm
Model: C3 2006-2009, Facelift model
Year: 2006 (56)
Engine Size: 1.6 (16v)
Fuel Type: Petrol
Mileage: 115000
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: LHD (Europe)
Engine name: TU5 16-valve (110 PS)
Been thanked: 3 times

Post

I've cleared the error codes, after that check engine light is off, and error codes have not come back.

i'll try recreating the conditions on which the errors started to occur tomorrow. Maybe that will point me in the right direction to discover what caused it.
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