DS4 Intake Air Temp sensor - P0113

[Mart7379]

Hi
Has anyone had the P0113 code on a DS4 Diesel 1.6, 64 plate

I believe it to be a Sensor fault. Am I right in thinking the MAP and IAT is integrated into the 1 sensor.

I recently bought a new sensor, which I think is a fake. As it hasn't resolved the P0113 code and the EML stays on as I then cleaned up the old sensor and the EML did not come on when the engine was started, however the following morning the EML came back on immediately.

Does the P0113 code relate to anything else, or is it specifically IAT sensor / Wiring / Connection


Thanks in advance for any advice.

[PaulC5]

I thought the IAT was in the MAF sensor and not the MAP sensor, assuming your car has a MAF sensor. This topic includes a description for P0113 which might apply to your car. viewtopic.php?t=80269

[Muir]

What PaulC5 said, the IAT sensor is defininately either incorporated into the MAF (Mass Air Flow) sensor or fitted seperately very close to it.
The MAF is always as close to the air filter as possible to give accurate air temp readings.

[Mart7379]

Yes I thought it was incorporated into the MAF sensor and that has been located with the intention of replacing. However after constantly being pointed towards a sensor that looked nothing like a MAF sensor i did some further research as to where the IAT actually was on the 64 plate DS4

The IAT Sensor according to Citroen Parts direct is labelled as number 11 in the diagram linked https://citroendirectparts.co.uk/produc ... re-sensor/

This evening I have been out to the car again and put the new sensor back in as testing as working fine with a multimeter set to Ohm.

Managed to erase the code, no eml when car started, took for test drive for a good 20 mins. Returned home, switched engine off, then back on again and the EML returned.

[Muir]

Actually come to think of it I've mixed the MAF & IAT together in my head.
The IAT could very well be placed elsewhere on the engine or even together with the MAP sensor.

I was thinking about how the MAF measures air density by way of current through a hot-wire, sorry for being so cocksure

[myglaren]

This is the MAF in my C5, ruined when the wheel arch liner flew to buts and lots of muck and water sucked up from the road.
You can see the fine wires and the thermistor (temperature sensor) on the right. Lots of muck and leaves too.

[Mart7379]

No problem, like I said I was sure it was relating to the MAF sensor. Since posting i have read that an issue can be the air filter so that will be my next thing to check. Other than that I don't know where else to turn.

[PaulC5]

Does your code reader do live data, this will show the values the sensor thinks the IAT is. Ought to be ambient before starting and then a bit higher, maybe about 30°C once everything is warmed up. Without live data you are wasting time/money trying to guess the faulty sensor. You do not need to pay much to get a reader with some live data eg from Gendan https://www.gendan.co.uk/product_FXNT200.html

[Mart7379]

Does your code reader do live data, this will show the values the sensor thinks the IAT is. Ought to be ambient before starting and then a bit higher, maybe about 30°C once everything is warmed up. Without live data you are wasting time/money trying to guess the faulty sensor. You do not need to pay much to get a reader with some live data eg from Gendan https://www.gendan.co.uk/product_FXNT200.html

I have a code reader i didn't pay much for, https://amzn.eu/d/bE7757l I think it does have live data on it but I can't be sure if it covers everything.

[Mart7379]

This is the MAF in my C5, ruined when the wheel arch liner flew to buts and lots of muck and water sucked up from the road.
You can see the fine wires and the thermistor (temperature sensor) on the right. Lots of muck and leaves too.

Yeh i took the hose off when we initially had toe warning on the dash. And it was clear. However, having said that it would defiantly be worth another look

[PaulC5]

The link to it suggests it gives live data and IAT is normally one you should be able to see. Also note the freeze frame data before you delete the code since this gives you sensor values when the fault occurred.

[Mart7379]

I will plug it in tomorrow and see what data it gives me. I am pretty sure when I was playing about with it earlier there was an option for live

[Mart7379]

Now I didn't really think much of it last night but before putting a new sensor back on and after taking the old off.(so, nothing plugged in) I checked to see if the IAT sensor fault still appeared. Which obviously it did, but it also flagged up P0238, which is in relation to the MAP sensor, and as soon as I plugged the MAP sensor back in it disappeared. But IAT fault remained, which makes me wonder, there is either a blockage somewhere which isn't allowing the IAT to read properly or I've replaced a faulty IAT sensor with nothing more than a fake. As with the MAP fault coming up and then disappearing again once the sensor was plugged back in, rules out a wiring issue. Doesn't it?

I will plug it in and see if I can get a life read from it later and update.

[Mart7379]

Yesterday I called into my local GSF to investigate whether the iat sensor i bought online was genuine. It looked it. However I then enquired as to how much their iat was. £38 inc VAT. Temptation nearly got the better of me and nearly bought it.

Just been browsing And found GSF ebay account............ same part. £25..........cheeky f**kers!

[Mart7379]

IAT sensor reading -40 on the live.