Hours: 07–23 daily
EN
Tune your file

TuningBot DTC Database · v4.37.15

P243F Particulate Filter Restriction - Soot Accumulation Too High Bank 2

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

P · PowertrainEmissionsOBD2

What P243F means

P243F
Particulate Filter Restriction - Soot Accumulation Too High Bank 2 Generic · emissions Data confidence 65%

The control module detected that the Particulate Filter Restriction - Soot Accumulation value was above the expected limit.

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

Related codes
P243AP243BP243CP243DP243E
P24 range
P2400P2401P2402P2403P2404P2405P2406P2407P2408P2409P240AP240BP240CP240DP240EP240FP2410P2411

How to read P243F

P

Powertrain: engine, transmission and driveline systems.

2

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

43F

Specific fault index within the subsystem.

Frequently asked questions about P243F

What does P243F mean?

Particulate Filter Restriction - Soot Accumulation Too High Bank 2. The control module detected that the Particulate Filter Restriction - Soot Accumulation value was above the expected limit.

Is P243F generic or manufacturer-specific?

P243F is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P243F 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 →

← Search the full DTC database