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TuningBot DTC Database · v4.37.14

P2DCD Particulate Filter B Incorrect

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainEmissionsOBD2

What P2DCD means

P2DCD
Particulate Filter B Incorrect Generic · emissions Data confidence 65%

The control module detected that the Particulate Filter B state or value did not match what was expected.

Symptoms

  • MIL or DPF warning illuminated
  • Possible reduced power or limp mode
  • Possible frequent regeneration attempts

Possible causes

  • Excessive soot load beyond regeneration limits
  • Differential pressure sensor or hose fault
  • Failed or interrupted regenerations (short trips)
  • Exhaust leak upstream of the sensor
  • Underlying engine fault increasing soot output

Recommended checks

  • Read soot load, ash load and differential pressure values
  • Check differential pressure sensor and hoses
  • Verify exhaust gas temperature sensor readings
  • Check for related injection, EGR or boost codes
  • Verify regeneration conditions can be met (trip profile)

Related and nearby codes

P2D range
P2D00P2D01P2D02P2D03P2D04P2D05P2D06P2D07P2D08P2D09P2D0AP2D0BP2D0CP2D0DP2D0EP2D0FP2D10P2D11

How to read P2DCD

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

DCD

Specific fault index within the subsystem.

Frequently asked questions about P2DCD

What does P2DCD mean?

Particulate Filter B Incorrect. The control module detected that the Particulate Filter B state or value did not match what was expected.

Is P2DCD generic or manufacturer-specific?

P2DCD is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2DCD at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: DPF System

ECU tuningDyno-tested results by model and engine See the results →

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