The engine P202A Code is linked with the car engine. The engine problem should be solved as soon as possible. You need to know the right meaning of the code and if the right meaning of the code is found, it is impossible to solve the car engine problem. The right meaning of the code is found in the car engine manual or you need to read the car manual to know the name of the car. Do not drive the car with faulty engine. You should take the car for a test drive for confirming the car engine is completely ok.