P2002 after chiptuning
P2002 means diesel particulate filter efficiency below threshold on bank 1. The ECU believes the DPF is not filtering as expected or that the sensor/model data suggests reduced filter efficiency.
Quick context
The cause can be a loaded or damaged DPF, pressure sensor problems, blocked lines, exhaust leaks, temperature issues or implausible DPF modelling. After tuning, it is important to separate true hardware issues from calibration or model conflicts.
A poor tune can increase soot production when injected quantity, air mass and smoke limitation are not balanced. Changed exhaust temperature behavior or poor regeneration logic can also make P2002 more likely.
Good files keep combustion, air path, smoke limiters and protection functions coherent. They do not blindly alter emission-related strategies and avoid unnecessary DPF stress.
Technical context
A fault code after a file change does not automatically prove a software fault. The important question is whether measured values, hardware state and calibration match in the affected load area.
P2002 evaluates DPF efficiency, not just a single sensor.
Pressure lines, sensors and temperature values can mislead the ECU.
After tuning, real combustion must remain plausible for the ECU models.
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These details help file service providers decide whether log analysis, file check or targeted adjustment is sensible.
ECU Jobs
ECU Jobs does not sell tuning files and does not promise a repair. The platform helps document the case: vehicle, ECU, fault code, logs, original file, current file and review goal.
Professional providers can then offer a file check, log analysis or calibration review. You receive offers and decide later whether to accept one.
Related codes
FAQ
P2002 means diesel particulate filter efficiency below threshold bank 1.
Yes, if soot, temperatures or DPF modelling are negatively affected. It can also be a real DPF or sensor issue.
They balance air, fuel, smoke limitation and protection functions instead of overloading the DPF.
DPF pressure, temperatures, soot/ash values, regeneration data, boost, air mass and rail pressure are useful.
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Create a structured request with fault code, logs, vehicle data and available files. An order is created only if you accept an offer.
