C5 2010 1,6 THP aut. deceleration noise

[xantia_v6]

Yes, I think that it is a combined temperature and pressure sensor.

[GiveMeABreak]

This is the fault code for your injection ECU (Bosch)

Fault code	P0113
After sales description of the fault code	Inlet air temperature sensor signal fault : Open circuit or short circuit to the plus
Description of the diagnostics	Detection of a short circuit to positive or of an open circuit on the inlet air temperature sensor ; Inlet air temperature lower than - 39,8 °C (For at least 0,5s)
Conditions of activation of the diagnostics	Engine management ECU in main triggering phase
Conditions of disappearance of the fault	Inlet air temperature between - 39,8 and 132,8 °C (For more than 0,5 s)
Down-grade modes if fault present	Reduction of the ignition advance in order to protect against incidence of knock
Switching on of the warning lamp and/or warning message	Warning lamp MIL
Main customer complaints likely	-
Suspect areas	Inlet air temperature sensor

[mf.lorant]

So as I assume, I need to clean it first with brake cleaning fluid and then see if the error still occurs, if yes than change of the sensor is needed.

[xantia_v6]

Marc, can you check that we have identified the correct sensor?

[GiveMeABreak]

I’ll need the VIN for the vehicle to confirm the part as there are quite a few variations, but it looks ok...

11 is the Air Pressure Sensor. 12 is the Intake Air Pressure Sensor

[mf.lorant]

Dear Marc

Please:
VF7**************[VIN obfuscated, can be read by forum staff]

[GiveMeABreak]

Here you go. This is the diagram for your car.

Item 11 Part Number 1922R6 available from Citroen for £100.03 inc. VAT. You’ll need to do the conversion for your country. But you may be able to get a new one elsewhere. If you do make sure it is a well known brand.

[xantia_v6]

The Mini/BMW part number seems to be: 13627535069 Parts for these engines are usually available cheaper as BMW/Mini spares, €50 seems to be about the going rate from a reputable supplier.

[mf.lorant]

The part has been purchased. Let's hope the best

[mf.lorant]

News

I did cleaning, so far so good, no P0113 so far after clearing. Until the new one arrives, I'll leave it as it is

[mf.lorant]

Dear all

No luck with the cleaning...so I have changed the sensor
The brand I purchased is Bosch
Now everything works perfectly!

Thank you for your kind assistance! You're the best!

Regards

PS.: do you have any idea how to change in the second picture part number 15, turbo reguln solenoid valve? This is the one giving the snifting sound at deceleration...

[xantia_v6]

Good news that a problem is fixed.

The turbo boost control valve is a little troublesome to change, it is done from under the vehicle and you probably need to remove the link pipe (if there is one) in the exhaust to get access, and even then it is not easy to reach or see what you are doing. I am not convinced that that valve will be causing an abnormal deceleration noise because any abnormal operation of the valve will trigger boost control error codes.

[mf.lorant]

I am giving a try to change it and then will see if the noise is still on. Another thing is that I am going to change the gaskets all around the turbo piping, I have a set of the gaskets. Anything I should be aware of?

[mf.lorant]

Changed the valve...same noise...Now I really don't know what's that sound
Ps.: what is the item called on the above picture which has number 20?

[mf.lorant]

Hi, it's me again...
Does anyone know any valve or hose in my car or engine that may cause a sniffing, air leaking sound. As you seen threads before I have tried many things so far with no luck, maybe there is ONE who had already same noise.
Thank you again, it's very annoying hearing this sound all the time
Video attached, sound is at 0:05, 0:20, 0:35, 0:55-0:59