How to fix the P2263 error: excessive pressure in the turbocharger circuit?

[func98]

While driving on the highway, the "Service" warning light suddenly came on. I took it to a repair shop for diagnosis, and it showed the P2263 error code: excessive pressure in the turbocharger circuit.
This warning light is intermittent—sometimes it’s on, sometimes it’s off. When driving on the highway at over 100 km/h, it’s really hard to accelerate further. Has anyone encountered this issue before?

[mickthemaverick]

Can you post the details of your car, year, model, engine. gearbox and RPO number?

[func98]

Can you post the details of your car, year, model, engine. gearbox and RPO number?

2012 Citroën DS5 1.6T, Vehicle Identification Number (VIN): VF7**************[VIN obfuscated, can be read by forum staff]

[xantia_v6]

For one possible cause, check the little air filter on the atmospheric port of the boost control solenoid. Although the solenoid itself is buried under the inlet manifold and a pain to work on, the filter is remotely mounted just behind the top engine cover, at the gearbox end of the engine. See: https://frenchcarforum.co.uk/forum/view ... 66#p530066 and the second post after that. If the rubber cover on the filter has shrunk, it restricts airflow and makes the boost control slow to release which can cause the error that you are seeing. I just discarded the rubber cover (keeping the foam filter element).