[jpb1]

Hi
2008 Volvo C30 1.6D with 108,000 miles.
Wondering if you'd be able to help diagnose my issue.

"Anti skid service required" light comes on, when I accelerate hard and pass roughly 3000rpm.
Light disappears after restart.

History:
Jan 2017 - bought car
2018 - anti skid light appears. Camshaft position sensor replaced. Fixed.
April 2021 - car seemed to cut out for a split second on motorway. Code came back as camshaft position sensor, so replaced again. No issue.

May 2021 - rear break calipers replaced.
July 2021 - anti skid light appears (around 1000 miles after caliper replacement. Remains permanently on (codes P0341 - Camshaft sensor, P0069 - Manifold Absolute Pressure, P1402). Turbo pressure sensor replaced.
July 2021 - light returns intermittently (often when accelerating hard, up to around 3000rpm). Recent codes:
P0341 - Camshaft sensor, P0238 - Turbo Boost Sensor, P2459 - DPF tegeneration frequency, P1402.

Following research, I've heard the Turbo Control Valve can fail, allowing pressure in the turbo to be too high.

Any ideas would be much appreciated.
Thanks, JP