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TuningBot DTC Database · v4.37.15

P2CE9 Particulate Filter Pressure Sensor C Circuit Intermittent/Erratic

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

P · PowertrainEmissionsOBD2

What P2CE9 means

P2CE9
Particulate Filter Pressure Sensor C Circuit Intermittent/Erratic Generic · emissions Data confidence 65%

The control module detected an unstable or intermittent signal in the Particulate Filter Pressure Sensor C circuit.

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

P2C range
P2C00P2C01P2C02P2C03P2C04P2C05P2C06P2C07P2C08P2C09P2C0AP2C0BP2C0CP2C0DP2C0EP2C0FP2C10P2C11

How to read P2CE9

P

Powertrain: engine, transmission and driveline systems.

2

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

CE9

Specific fault index within the subsystem.

Frequently asked questions about P2CE9

What does P2CE9 mean?

Particulate Filter Pressure Sensor C Circuit Intermittent/Erratic. The control module detected an unstable or intermittent signal in the Particulate Filter Pressure Sensor C circuit.

Is P2CE9 generic or manufacturer-specific?

P2CE9 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P2CE9 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. 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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