Hi, car starts and runs perfectly, customer reported no issues it's just that the 'Anti Pollution warning' comes on now and again.
Code logged is P0341 which I believe is normally cam sensor but there is no cam sensor fitted to this engine.

Code description is; P0341 - phase detection integrated into the ignition coherence permanent fault.

Could this be early sign of coil failure or is it detecting cam timing issue,or what else?

Coil charge up times are identical.

Thanks, Martin.