Hi All,
Just had to call out the RAC - I was travelling along the M1 when the warning "Engine Temperature High - Stop engine now" (or something along these lines) flash up. The engine started to judder/misfire so as soon as I could, I pulled onto the hard shoulder, switched off the engine and lifted the bonnet. The fan was running (but stopped seconds after), the coolant expansion tank contained coolant and the pressure wasn't excessive (I opened it slightly and closed), the engine was not excessively hot and no other signs of an overheat were present. The auxiliary belt was intact.
I called the RAC and after reading the fault codes found P2479 along with a temp reading of just under 400 degrees C. The technician reset the codes and with the engine running, could see that the sensor was now reading around 150 degrees C. (I've included a screenshot the code on the RAC Tech's IPad).
![92569]( "92569")
The Technician thought that a DPF clean might have been underway and the sensor failed at this point causing the engine to trigger the overheat code. Unfortunately, I didn't get anymore info such as time since last DPF clean, no. of cleans etc.
The price for this sensor is around £50 and appears easily accessible but...
1. on trying to remove the sensor to clean it (I thought it might be coked up and this would be a removal "trial run"), the fan is in the way and despite some gentle pushing/bending of the fan and its housing, there just doesn't seem to be enough room to remove it - it looks like a fan out (or worse) job (I've included photos of the front engine bay just in case anyone knows of a trick involving undoing of a few bolts).
![92570]( "92570")
![92571]( "92571")
![92573]( "92573")
2. I'd read on t'internet that a software update should also be done (this came in around 2015 I think. My car is 2013 and has not been updated to my knowledge).
3. I'd also read that it's sensible to replace both sensors 1 & 2 because the other sensor will also fail soon.
4. Could another problem have caused the sensor to fail?
I'd rather just replace the faulty sensor (as the car runs fine without any s/ware update - which will cost £50 I'd read) but because of the fitting issue it looks like I'm going to have to "bite the bullet" and take it to Vauxhall.
What do other forum members think?
Many Thanks.
Just had to call out the RAC - I was travelling along the M1 when the warning "Engine Temperature High - Stop engine now" (or something along these lines) flash up. The engine started to judder/misfire so as soon as I could, I pulled onto the hard shoulder, switched off the engine and lifted the bonnet. The fan was running (but stopped seconds after), the coolant expansion tank contained coolant and the pressure wasn't excessive (I opened it slightly and closed), the engine was not excessively hot and no other signs of an overheat were present. The auxiliary belt was intact.
I called the RAC and after reading the fault codes found P2479 along with a temp reading of just under 400 degrees C. The technician reset the codes and with the engine running, could see that the sensor was now reading around 150 degrees C. (I've included a screenshot the code on the RAC Tech's IPad).
The Technician thought that a DPF clean might have been underway and the sensor failed at this point causing the engine to trigger the overheat code. Unfortunately, I didn't get anymore info such as time since last DPF clean, no. of cleans etc.
The price for this sensor is around £50 and appears easily accessible but...
1. on trying to remove the sensor to clean it (I thought it might be coked up and this would be a removal "trial run"), the fan is in the way and despite some gentle pushing/bending of the fan and its housing, there just doesn't seem to be enough room to remove it - it looks like a fan out (or worse) job (I've included photos of the front engine bay just in case anyone knows of a trick involving undoing of a few bolts).
2. I'd read on t'internet that a software update should also be done (this came in around 2015 I think. My car is 2013 and has not been updated to my knowledge).
3. I'd also read that it's sensible to replace both sensors 1 & 2 because the other sensor will also fail soon.
4. Could another problem have caused the sensor to fail?
I'd rather just replace the faulty sensor (as the car runs fine without any s/ware update - which will cost £50 I'd read) but because of the fitting issue it looks like I'm going to have to "bite the bullet" and take it to Vauxhall.
What do other forum members think?
Many Thanks.
