If you are investigating new wiper blades that still leave streaks, save every stored and pending code before clearing anything. No scan tool can evaluate glass contamination or blade contact. Record the engine temperature and load alongside the reading; the same value can mean different things in different conditions.
A basic reader may not access every module. Clean the windscreen with a suitable product and check blade fit and arm pressure. Use the exact vehicle’s service information to interpret the result.
Quick educational note
For information, not a diagnosis or repair instruction. Vehicle-specific checks are still required. Consult the manufacturer's guidance and a qualified technician.
How to use this information
This article explains general principles and does not establish what is wrong with your vehicle. Read the content limitations.