P2002

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Code P2002 indicates that the Diesel Particulate Filter is operating with an efficiency level falling below the manufacturer's defined threshold. This condition suggests a deviation in the filter's ability to trap particulates or regenerate properly under current driving conditions, rather than confirming immediate mechanical failure of the unit itself. Mechanics should focus their inspection on systems influencing DPF regeneration and airflow integrity. Typical areas for evaluation include the exhaust gas recirculation system, turbocharger performance, fuel injection timing accuracy, and potential upstream sensor malfunctions that could skew efficiency calculations. Verification against official technical documentation is required to determine if this reading represents a transient state or requires component replacement.