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Discussion Starter #1 (Edited)
Hi all.

Quick Story.

Coming home from work doing around 100-120kmh dpf regeneration has begun and finished at 20% now it's around 36%.
https://drive.google.com/file/d/1iw7Ai7g0zjxqB4ff1jko8rUu20dktLSj/view?usp=drivesdk

Just after regeneration i had an error on dashboard and quickly scaned my car with ELM and got fault code P2428 03
Engine overheatedand gauge went on red 130°C.

https://drive.google.com/file/d/1tGpikBLublzoAeGItKuZudoFYUcXrlfB/view?usp=drivesdk

P2428 is a diagnostic trouble code (DTC) for " Exhaust Gas Temperature Too High Bank 1"

https://drive.google.com/file/d/1rrHoDMHVKINL8Fcuz815ahNrii_gs38w/view?usp=drivesdk

After deleting codes car start driving fine without any issues.

I have Googled that it may needs software updating, but...

Next day I took my car for a ride and nothing happens, however another day i went for a longer trip and after 50 miles i got fault code P2084.

P2084 is a diagnostic trouble code (DTC) for " Exhaust Gas Temperature (EGT) Sensor Circuit Range/Performance Bank 1 Sensor 2"

https://drive.google.com/file/d/1Fdh3nozFc5IZWNgHHmjPUTHXpSY1xpKs/view?usp=drivesdk

From the above I'm thinking it's the EGT sensor position 2.
Am i right?

Where is it? Which one it is?

I would like to fix it before next regeneration which should be sometime next week probably.

P.s

What's the difference between Exhaust Gas Temperature sensor and
Exhaust Pressure sensor.

It's on the pictures below, for me it looks like the same sensor under different name but I'm wrong that's for sure.

Picture from EPC.
Engine nr4 i n5
https://drive.google.com/file/d/1afGpXKwMWocFWPdRBm5JOE64jIPIeG2m/view?usp=drivesdk

List
https://drive.google.com/file/d/1or0fkLg87RapYwADynpH9W026NMCiHCR/view?usp=drivesdk

Cat nr37
https://drive.google.com/file/d/1-rZaL8dKmJ07GDhnAwHsEGRLSJai4djy/view?usp=drivesdk

List
https://drive.google.com/file/d/1MaUSGqqxZ0-4BkJTPHjMIjk6D95d5v84/view?usp=drivesdk

Live data 5min from cold engine
https://drive.google.com/file/d/1kQ2nVSa7Fw7N3cJsRtCJHF1R3CZUXQYi/view?usp=drivesdk

Few pictures from another apk from Google play
https://drive.google.com/file/d/1_1H6KYT3KRzWeII5-OuzQBA8qmhGaPlx/view?usp=drivesdk

https://drive.google.com/file/d/1XFB-H_kd75W4-d4k8Lgf0zbjuuI3MPPw/view?usp=drivesdk

https://drive.google.com/file/d/1dpr2LxhaQ7IrK12hQhYnTrNvbEfLKYIt/view?usp=drivesdk

https://drive.google.com/file/d/1gIGCHq6Q2Ebkgk9xaw4hOKfWOQoBIL9i/view?usp=drivesdk

Few pictures from opcom
https://drive.google.com/file/d/1MeFi13W2Z9Gak893R-iLlmEIotGlSts0/view?usp=drivesdk

https://drive.google.com/file/d/13tmt_ca223_IJDemxN1FlrAzphpADpB4/view?usp=drivesdk

https://drive.google.com/file/d/1_08pdmO-e4PnCAQr43lDukIwznDQGFrY/view?usp=drivesdk

https://drive.google.com/file/d/1E27VEEpnpnXwoiM3piUanHRbIQ3COEkQ/view?usp=drivesdk

https://drive.google.com/file/d/17NIUa8pk-RG1yjfFrYICrepkUlaOEXqN/view?usp=drivesdk

https://drive.google.com/file/d/1QVChbf9idZxonwrstM3ltfZ_RVxs2tBK/view?usp=drivesdk

Could someone advice please on what sensor might be faulty from all the above and where it's located and also do i need to do some coding or programming after fitting?, or its just swap job.

Sensors quite expensive 100-150£ new
Used ones for 50-70£
Does anyone have replaced them already? Should I invest in new one or used one will do the job?

Thank you in advance
 

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Premium Member
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13,981 Posts
Will your diagnostic tool allow you to monitor the sensors temperature readings, the sensor in question is the one you can see when you look down the front of your dpf, you have a lambda sensor in the top and a bit lower down is the temp sensor, 17mm spanner to remove it.
 

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343 Posts
Discussion Starter #3 (Edited)
Thx for replying.
But also what I have found there is another one down the bottom as well.
It is located after dpf somewhere. Someone said it's on the exhaust pipe but can't find it. .

See this on the picture here
No.5 on here.
Sensor is shown in the bottom left corner pointing some unknown place at the engine.
Looks like it's somewhere behind.

https://drive.google.com/file/d/1DmfNwpqHNU1gEuA102T_3gXeZ177yqLF/view?usp=drivesdk

Am i correct.

Also there is a bit about it here.
They mentioned that there are 2 sensors fitted as of MY2014 always have 2 sensors.

https://gm.oemdtc.com/433/loss-of-power-p2428-engine-stalls-in-idle-2009-2015-opel-vauxhall


Mine seems to have 2 but I can't locate it and I'm not sure if the codes saying about the position 2- second one sensor.

In my first post if you can open pictures, i have attached a few pictures on which it looks like one sensor is probably faulty. Just don't want to buy the wrong one.
 

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Premium Member
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13,981 Posts
Sorry i misread your post, way to much information and links for me to cope with, Temp sensor 2 (which i now realise is the one your after) is the one below the dpf, Temp sensor 1 is the one i described above, so you need the one after the dpf.
I would still call Vauxhall and ask if your car would be subject to the software update, otherwise you may waste money buying a new sensor when its not needed, i believe the update disables the Temp sensor, not 100% sure but check first.
 

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343 Posts
Discussion Starter #5 (Edited)
I spoke to the dealer but the guy seems to be pathetic and said that software won't be helpful. They need the car with the code so they can diagnose and test it.
From the other hand, someone on another forum has confirmed that I have the latest software for my car installed
P.s.
For updating software they wanted 126£ including VAT.
 

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766 Posts
I spoke to the dealer but the guy seems to be pathetic and said that software won't be helpful. They need the car with the code so they can diagnose and test it.
From the other hand, someone on another forum has confirmed that I have the latest software for my car installed
P.s.
For updating software they wanted 126£ including VAT.
Don’t bother asking the dealer. Ring vauxhall customer service direct and they will tell you if anything due. Simple phone call.
 

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343 Posts
Discussion Starter #7
Thx , I'll do it tomorrow.

In the meantime i have another code just come up, P247A - Exhaust Gas Temperature Out of Range Bank 1 Sensor 3

From what I have found here
https://www.autocodes.com/amp/codes/p247a.html

It refers to the EGT sensor position 3.

Position 3?

That's strange as there's no position 3 as far as I'm concern.

So i presume it's about second sensor at position 2. Position 1 is oxygen sensor, Position 2 is EGT1 sensor, Position 3 is EGT2 sensor. Maybe.
That's what I have ordered on ebay, new one for 85£.

When I strip it down I'll do some measurement to find out if it's the right one.
 

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Thx , I'll do it tomorrow.

In the meantime i have another code just come up, P247A - Exhaust Gas Temperature Out of Range Bank 1 Sensor 3

From what I have found here
https://www.autocodes.com/amp/codes/p247a.html

It refers to the EGT sensor position 3.

Position 3?

That's strange as there's no position 3 as far as I'm concern.

So i presume it's about second sensor at position 2. Position 1 is oxygen sensor, Position 2 is EGT1 sensor, Position 3 is EGT2 sensor. Maybe.
That's what I have ordered on ebay, new one for 85£.

When I strip it down I'll do some measurement to find out if it's the right one.
Check it’s a decent part , loads & loads of cheap Chinese copy car parts flooding the market at the moment .
Auto components parts sellers are warning of this very big problem catching loads of people out , highly dangerous if a safety part fails .
 

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343 Posts
Discussion Starter #10 (Edited)
Done some tests on the first sensor (that one by the radiator and fans) without pulling it out. So...
First measurement - 430 Ohm on the cold engine.
Second measurement - 0.69 Ohm on the hot engine, seconds after switched off the engine. Coolant Temperature at 90°.

This makes me believe that the EGTS position 2 is faulty at 99%

Video how to diagnose the EGT.

I couldn't test the bottom one as I couldn't find it and I had no chance to have a look underneath yet.

New sensor position 2 arrived and I will be fitting it over the weekend.
 

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Hello, I have the same problem. I managed to read the data from the EGT sensor 1. The think is when the temperature increases, the resistance increases as well. I read a lot and I think it should be the opposite - with temperature increasing the resistance should decrease.
Also, is there anyone, who can show me where I can find the connector for the EGT sensor 2 - I want to check it too. The car is Insignia, 2.0 diesel, 2014.
Thanks in advance!

Sent from my LYA-L09 using Tapatalk
 

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5,970 Posts
Here's the EGT Temperature vs. Resistance Values (Approximate)

°C °F Ω
1000 1832 849
900 1652 795
800 1472 738
700 1292 679
600 1112 618
500 932 554
450 842 521
400 752 488
350 662 454
300 572 420
250 482 385
200 392 349
150 302 313
100 212 276
50 122 239
25 77 220
0 32 201
−20 −4 185
−40 −40 170
 

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Discussion Starter #13
It seems to be wrong that list a bit as my EGT sensor position 1 was showing 0.63ohm when hot, when cold around 15°c was 400ohm ,more less. And that is a good sensor.

As per video above.

My EGT sensors position 2 was faulty so measures was different.

Sent from my K10 using Tapatalk
 

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@Peter01 The temp vs resistance list i posted is a direct c&p from TIS for the Insignia A 2.0d so it should be reasonably accurate,although they don't give a variation percentage
 

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Discussion Starter #15
Perhaps you are right, however on every video I have seen resistance was decreasing while temperature raises

Sent from my K10 using Tapatalk
 

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That logic applies to the IAT and ECT sensors the EGT sensor is as i posted,btw the video link you posted is for an EGR temp sensor (water) not EGT (gasses)
 

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Discussion Starter #17 (Edited)
Again, perhaps you are right, but most of those sensors works similar,
Here's EGT sensors testing than.



I'm not trying to argue with you, I'm just saying how I have tested mine and I have located the faulty one using this method.


Sent from my K10 using Tapatalk
 

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Yes there's no reason it can't work like your VW example,it depends what the ECM is set up to expect,
but that's not what GM list for their product,the later PSA Vauxhalls also use the same logic.
 

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Hi all,

I have a 63 plate Insignia ecoflex. Driving alongside the motorway get the message Turn Off Engine Overheating.

Got the RAC out and been told I need to change the sensor and get a software update from dealers. Changed the front sensor (by the bonnet) and same issue on a number of occasions with the same fault codes.

I've checked with Vauxhall and the car has the latest software update.

Been advise it maybe the bottom sensor...

Anyone seen this before or got any advice. Only had the car 2 months and I absolutely love it!
 

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Discussion Starter #20
You got 2 sensors, and probably have to replace the second one. Located after dpf. It's just before elastic exhaust pipe connection

Sent from my K10 using Tapatalk
 
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