This client has come in with a complaint about a hard-starting issue and the engine light. We ran a diagnostic scan test which revealed a camshaft position sensor fault. Our testing then confirmed that there was no reading actually coming from the camshaft sensor.
Our advice to the client was to replace the camshaft sensor, including the crankshaft sensor as a pair, as they both age at the same time. Having one replaced and not the other may cause a problem in the near future again.