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TuningBot DTC Database · v4.37.15

P245C EGR Cooler Bypass Control Circuit Low Bank 1

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

P · PowertrainEmissionsOBD2

What P245C means

P245C
EGR Cooler Bypass Control Circuit Low Bank 1 Generic · emissions Data confidence 85%

The control module detected that the signal in the EGR Cooler Bypass Control circuit stayed below the expected operating range.

Symptoms

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

Possible causes

  • Wiring
  • EGR cooler bypass valve
  • ECM / Wiring
  • short to positive
  • HO2S
  • ECM

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 P245C

P

Powertrain: engine, transmission and driveline systems.

2

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

45C

Specific fault index within the subsystem.

Frequently asked questions about P245C

What does P245C mean?

EGR Cooler Bypass Control Circuit Low Bank 1. The control module detected that the signal in the EGR Cooler Bypass Control circuit stayed below the expected operating range.

Is P245C generic or manufacturer-specific?

P245C is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P245C 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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