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TuningBot DTC Database · v4.37.15

P23E5 EGR C Control Stuck Open

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

P · PowertrainEmissionsOBD2

What P23E5 means

P23E5
EGR C Control Stuck Open Generic · emissions Data confidence 65%

The control module determined that the EGR C Control did not change state as commanded and appears stuck.

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

P23 range
P2300P2301P2302P2303P2304P2305P2306P2307P2308P2309P230AP230BP230CP230DP230EP230FP2310P2311

How to read P23E5

P

Powertrain: engine, transmission and driveline systems.

2

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

3E5

Specific fault index within the subsystem.

Frequently asked questions about P23E5

What does P23E5 mean?

EGR C Control Stuck Open. The control module determined that the EGR C Control did not change state as commanded and appears stuck.

Is P23E5 generic or manufacturer-specific?

P23E5 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P23E5 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: EGR System

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

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