I recently replaced the EGR cooler on my Vauxhall Insignia 2.0 CDTI due to a slight leak of coolant. Now the car is showing a ‘Service Vehicle Soon’ warning and is down on power. Jubyd Rahman
Given that the EGR cooler has just been replaced, I would suspect that the most likely cause of the warning and lack of power is that one of the vacuum pipes has been dislodged or fractured. The turbo control valve should be mounted on the front panel and I would check the vacuum pipes between this and the turbo. I would also ensure that the intercooler pipes are correctly fitted and are not breached. It would also be worth reading the ECU for any pending codes that have been recorded when the power loss occurs.