Your IP address and browser information will be recorded as proof of this acknowledgement. This data is retained for 12 months.
Vauxhall Insignia 2.0 CDTi with EGR cooler failure causing coolant loss and white smoke. Common on A20DTH and A20DTJ engines. This fault code is stored when the engine control unit detects a specific fault condition. Common causes include sensor failures, wiring faults, and component wear. Always read additional fault codes before replacing parts — multiple codes together provide a clearer diagnosis. Clear the code after repair and test drive to confirm the fault does not return.
Based on 0 driver confirmations
No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this Opel Insignia problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
Couldn't afford the full repair immediately. Mechanic blanked off the EGR cooler temporarily and cleaned the EGR valve. White smoke stopped. Only drove it gently for 6 weeks until I could afford the proper repair. Not recommended long term but worked as a stopgap.
Parts replaced: EGR blanking plate
White smoke from exhaust and coolant level dropping with no external leak. Classic EGR cooler failure on the 2.0 CDTi. Coolant was getting into the intake through the cracked cooler. New EGR cooler and full coolant flush. £480 fitted. Running clean since.
Parts replaced: EGR cooler, coolant flush
Your real-world fix helps thousands of drivers worldwide. Takes 2 minutes.