My 1.8 petrol insignia 2013 keeps having code 3 coming up .
This happens if it’s cold or hot been used or not etc.
Error book says relates to cooling but my coolant is at full mark and has never moved in all the time I have had it. This has been happening for about a month now.
I don’t feel any issues with the car nor see any leaks etc
There was a TSB on this a while ago but cant seem to find it . This explains ,
"The Code 3 message on your Vauxhall Insignia does indeed relate to an issue with the coolant and a possible leak that may be caused by some cracked housing around the EGR valve.
Vauxhall did release a Technical Service Bulletin (TSB) some time ago that addressed this known issue. Rather than having to replace the EGR, the TSB repair kit allows the housing to be repaired - at a much smaller cost.
If you're seeing the Code 3 message, you need to book your car into your local garage as soon as possible as the coolant system is pressurised and should not be leaking."