The P242F diagnostic trouble code (DTC) relates to the Diesel Particulate Filter (DPF) in diesel vehicles. Specifically, it indicates that there is a restriction in the DPF due to ash accumulation. The DPF is an …

On rare occasions, when I have discovered a stored P242F code, it has meant that the powertrain control module (PCM) has detected a level of ash restriction in the diesel particulate filter (DPF) …

Oct 29, 2025 · In this article, we'll walk through what P242F really means, the signs to look out for, and the best ways to fix and prevent it so that you can get back on the road as soon as possible.

Jun 4, 2025 · Learn all about the P242F code, what causes diesel particulate filter restriction due to ash accumulation, and how to diagnose and fix common issues to maintain optimal engine performance.

3 days ago · How to fix P242F code fast—discover the crucial steps to take when your diesel engine's DPF triggers this common error.

May 22, 2024 · What Does P242F Trouble Code Mean? The P242F trouble code means your vehicle’s diesel particulate filter (DPF) is clogged with ash. The DPF is designed to trap soot and ash from the …

Explore the P242F engine error code, its causes, symptoms, and how to fix it. A comprehensive guide to diagnosing and resolving diesel particulate filter issues.

P242F is a diagnostic trouble code (DTC) that indicates a restriction in the diesel particulate filter (DPF) due to excessive ash accumulation. The DPF is an emissions control device designed to capture and …

Jul 24, 2016 · Code P242F will set when the soot / ash levels in the aftertreatment diesel particulate filter system have went beyond the most severe possible. Correction requires DPF replacement.

NOTE: DTC P242F is usually the result of a driveability or fuel system failure. This DTC indicates that the Diesel Particulate Filter may either be face plugged or filled with ash.