P0002 fault code, applicable to all car manufacturers, means fuel quantity regulator control circuit range/performance.
Background knowledge: (In new cars where fuel injectors are widely used, fuel quantity regulators are rarely used)
Whenever a car fault is eliminated, the fault code needs to be cleared. When clearing the fault code, it should be strictly carried out in accordance with the fault code clearing scheme specified for the specific vehicle model. Be careful not to remove the negative grounding wire of the battery at will to clear the fault code. Otherwise, it may cause the following two troubles: First, it causes the control center computer of some models to lose normal records. I believe everyone knows that many models of car computers have automatic memory functions. If the connection wire of the negative electrode of the battery is removed, the engine operation experience data in the random memory will be lost, resulting in your car’s performance for a long time after the repair, or after driving for a while, the cleared fault code will reappear; second, sometimes it will cause some useful functions to not work, such as the audio lock function is one of the most common cases. At this time, to restore the normal function of the audio system, it is necessary to decrypt the audio, which is a very troublesome process.
Tip: To quickly find fault codes, you can use a professional OBD2 scanner to obtain the corresponding fault codes, which can help pinpoint the exact problem. This data can help you understand the performance of vehicle components and troubleshoot potential problems before they become serious.
