P2002 — Diesel Particulate Filter...Threshold (Bank 1)
The ECU has determined that the DPF is no longer filtering particulate matter effectively, based on differential pressure sensor readings.
6+
Affected Brands
11+
ECU Platforms
2
Related Services
2
Related DTCs
Symptoms
What the driver typically experiences when P2002 is stored
Why does P2002 appear after tuning?
Triggered after DPF modifications when the differential pressure sensor monitoring and regeneration strategies are not fully recalibrated.
How proper calibration can address P2002
WEREMAP DPF calibration includes complete deactivation of pressure monitoring, regeneration injection, and associated diagnostic routines for clean operation.
Related Diagnostic Codes
Codes from the same diagnostic system as P2002
Affected ECU Platforms
Commonly Affected Vehicles
Based on data from 6+ vehicle brands. P2002 is not limited to these models.
Frequently Asked Questions
What does P2002 mean?â–¼
Why does P2002 appear after ECU tuning?â–¼
How do you prevent P2002 during remapping?â–¼
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