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TuningBot DTC Database · v4.37.15

P241F EGR Cooler B Efficiency Below Threshold

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

P · PowertrainEmissionsOBD2

What P241F means

P241F
EGR Cooler B Efficiency Below Threshold Generic · emissions Data confidence 65%

The control module calculated that EGR Cooler B efficiency dropped below the calibrated threshold for this application.

Symptoms

  • MIL illuminated
  • Possible reduced engine performance
  • Possible rough idle or hesitation

Possible causes

  • Carbon-blocked EGR passages
  • Sticking or slow EGR valve
  • EGR actuator or position sensor fault
  • Wiring or connector fault
  • Vacuum supply fault (vacuum-operated systems)

Recommended checks

  • Read freeze frame data and full module scan
  • Check battery voltage and sensor supply
  • Inspect EGR wiring and connectors
  • Compare commanded vs actual EGR position/flow with live data
  • Inspect EGR valve and passages for carbon build-up
  • Check related vacuum lines where fitted

Related and nearby codes

How to read P241F

P

Powertrain: engine, transmission and driveline systems.

2

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

41F

Specific fault index within the subsystem.

Frequently asked questions about P241F

What does P241F mean?

EGR Cooler B Efficiency Below Threshold. The control module calculated that EGR Cooler B efficiency dropped below the calibrated threshold for this application.

Is P241F generic or manufacturer-specific?

P241F is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P241F 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

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

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