Can a faulty oil sending unit create a knocking noise in the engine?

Yes, a faulty oil sending unit can potentially contribute to a knocking noise in the engine. If the oil sending unit fails, it may lead to inaccurate oil pressure readings, which can result in insufficient oil flow and lubrication. This lack of proper lubrication can cause engine components to knock or produce abnormal sounds due to increased friction. However, it's essential to diagnose the root cause, as knocking noises can also stem from other issues, such as worn bearings or piston problems.