How to solve the P2002 fault code?

[MacLaila]

The definition of this fault code is that the emissions do not meet the standard. It is recommended to check whether the data stream of the oxygen sensor is normal. If the data is abnormal, replacing the particulate filter at 50,000 miles can solve the problem.

[AlexaMarie]

I've been driving diesel cars for over 20 years and encountered the P2002 trouble code many times. This indicates the particulate filter efficiency is too low, usually due to clogging that wasn't cleaned in time. I suggest starting with driving habits - try driving on the highway for more than 20 minutes to let the vehicle perform automatic filter regeneration, which burns off accumulated particles. If the regeneration indicator lights up on the dashboard, that's correct. If regeneration doesn't solve the issue, it might be a sensor problem, like a faulty DPF pressure sensor giving inaccurate pressure readings and causing false alarms. In this case, you can check the data stream with a diagnostic tool yourself, but inexperienced drivers should visit a repair shop. Delayed treatment can lead to exhaust pollution or increased engine load, raising repair costs. Prevention is crucial - regularly drive at high speeds to clear soot and avoid prolonged low-speed driving.