Hours: 07–23 daily

TuningBot DTC Database · v4.37.14

P24FE SCR Catalyst Incorrect

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

P · PowertrainEmissionsOBD2

What P24FE means

P24FE
SCR Catalyst Incorrect Generic · emissions Data confidence 65%

The control module detected that the SCR Catalyst state or value did not match what was expected.

Symptoms

  • MIL or SCR/AdBlue warning illuminated
  • Possible start-count-down or torque limitation on some applications

Possible causes

  • Reductant quality or level fault
  • Dosing valve or supply module fault
  • NOx sensor fault
  • Frozen or crystallized reductant lines
  • Wiring or connector fault

Recommended checks

  • Read NOx sensor values and dosing system status
  • Check reductant level and quality data
  • Inspect dosing valve, lines and heater operation
  • Check wiring and connectors of the SCR components
  • Check for OEM technical bulletins and software updates

Related and nearby codes

How to read P24FE

P

Powertrain: engine, transmission and driveline systems.

2

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

4FE

Specific fault index within the subsystem.

Frequently asked questions about P24FE

What does P24FE mean?

SCR Catalyst Incorrect. The control module detected that the SCR Catalyst state or value did not match what was expected.

Is P24FE generic or manufacturer-specific?

P24FE is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P24FE 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

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

← Search the full DTC database