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Hi everyone. I'm new to the forum and have what might be an expensive problem with my 2014 Insignia 2.0 cdti (only 36k miles under its wheels). Yesterday it suddenly started ringing bells and telling me the engine was overheating and I need to stop immediately. I stopped and gave it 30 mins to cool. When started again it gave the same alert. So now I left it 4.5 hours and tried again. At first it wouldn't start then did with clouds of white smoke and making a sound like a bag of spanners being rattled. Next move was to get it towed to my local garage. My thought was water pump failure leading to head gasket failure. However the garage says it isn't overheating and the gasket and pump appear fine. Also no coolant loss. They say something serious is wrong with the injectors and it seems to be running on 2 cylinders but they don't do diesel engines and don't really know what is going on. They did say they thought it was serious/ expensive!! Does anyone have any idea what this problem might be? Can an injector issue be linked to false overheating warnings and white smoke? Any help appreciated.
 

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Hi and Welcome,
Do you have a service warning light on the dash?
You need to get the diagnostic codes read with OpCom or TECH2.
My Initial thought is its a power distribution or ECU fault rather than a mechanical failure.
 
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Check the dpf temp sensor reading, if its really high then the ECU will go into regen mode which will give your symptoms, i also seem to remember reading something about this fault being related to the dpf temp sensor.
 

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Hi and Welcome,
Do you have a service warning light on the dash?
You need to get the diagnostic codes read with OpCom or TECH2.
My Initial thought is its a power distribution or ECU fault rather than a mechanical failure.
Thanks for replying. No other messages on the dash. I'm not sure what to do next. My options seem to be either take it back to the small dealer from whom I bought it. But the warranty expired 2 weeks ago and he is 90 miles away meaning renting a trailer and using our work van. The local garage suggested taking it to a diesel specialist, again a trailer rental job. Is OpCom or TECH2 a job for the Vauxhall dealer?
 

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Check the dpf temp sensor reading, if its really high then the ECU will go into regen mode which will give your symptoms, i also seem to remember reading something about this fault being related to the dpf temp sensor.
Sounds more hopeful than expensive mechanical problems. I'll suggest this to the garage thanks.
 

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Tech 2 wont work on the Insignia im afraid.... if you have a good version of Opcom it will.
Ask the garage if the codes will clear down or just come straight back, it would also help if you got a copy of what codes they do find and post them here.
 

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Tech 2 wont work on the Insignia im afraid.... if you have a good version of Opcom it will.
Ask the garage if the codes will clear down or just come straight back, it would also help if you got a copy of what codes they do find and post them here.
I will call with the garage, who still have the car, tomorrow. Anything I find I'll post. Thanks.
 

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Hi everyone. I'm new to the forum and have what might be an expensive problem with my 2014 Insignia 2.0 cdti (only 36k miles under its wheels). Yesterday it suddenly started ringing bells and telling me the engine was overheating and I need to stop immediately. I stopped and gave it 30 mins to cool. When started again it gave the same alert. So now I left it 4.5 hours and tried again. At first it wouldn't start then did with clouds of white smoke and making a sound like a bag of spanners being rattled. Next move was to get it towed to my local garage. My thought was water pump failure leading to head gasket failure. However the garage says it isn't overheating and the gasket and pump appear fine. Also no coolant loss. They say something serious is wrong with the injectors and it seems to be running on 2 cylinders but they don't do diesel engines and don't really know what is going on. They did say they thought it was serious/ expensive!! Does anyone have any idea what this problem might be? Can an injector issue be linked to false overheating warnings and white smoke? Any help appreciated.
Known fault, software update will cure 8/10 times. Sometimes faulty EGT sensor, can be 1 or 2. There was some talk of fretting plugs etc If you check exhaust after treatment data you can usually see the sensor that is faulty. This repair should be covered under warranty so make a fuss if it is not. All that smoke and overheating warning is just nonsense from a confused ECU.


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Known fault, software update will cure 8/10 times. Sometimes faulty EGT sensor, can be 1 or 2. There was some talk of fretting plugs etc If you check exhaust after treatment data you can usually see the sensor that is faulty. This repair should be covered under warranty so make a fuss if it is not. All that smoke and overheating warning is just nonsense from a confused ECU.


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All that crying is from a sh1tting himself owner.
 

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Known fault, software update will cure 8/10 times. Sometimes faulty EGT sensor, can be 1 or 2. There was some talk of fretting plugs etc If you check exhaust after treatment data you can usually see the sensor that is faulty. This repair should be covered under warranty so make a fuss if it is not. All that smoke and overheating warning is just nonsense from a confused ECU.


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Thanks for the advice (and to everyone who has helped me here). I am printing out all the responses to give to the garage on Monday morning and we'll see what happens. I will post any updates and hopefully help someone else in future.
 

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Well it's all sorted now. Thanks to everyone for your advice which has resulted in the garage performing a forced DPF regeneration. Given I recently attended a Speed Awareness Course it was interesting to be advised I may be driving too few miles and too slowly and need to "flog the living daylights out of the car" every so often to keep the DPF clear. That or use fuel additive. Hopefully this thread can now be closed.​
 

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No software update? No EGT sensor fault stored? A regen is always done after this repair as there is a lot of unburnt fuel soot etc in the exhaust. Normally I do it on the road as it is not so hard on the components. The symptoms you described certainly can't be cured by a regen


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No software update? No EGT sensor fault stored? A regen is always done after this repair as there is a lot of unburnt fuel soot etc in the exhaust. Normally I do it on the road as it is not so hard on the components. The symptoms you described certainly can't be cured by a regen


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All he said was that he did a regen from the computer. The car seems to run fine although I've only done about 10 miles since getting it back. I'm just keeping my fingers crossed that whatever he did, did the trick. Hopefully nothing further will come of it but if it does I'll post about it. Fingers crossed. Thanks.
 
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