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TuningBot DTC Database · v4.37.15

P25C5 Brake Booster Temperature Sensor A Circuit Range/Performance

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

P · PowertrainEngineOBD2

What P25C5 means

P25C5
Brake Booster Temperature Sensor A Circuit Range/Performance Generic · engine Data confidence 65%

The control module judged the Brake Booster Temperature Sensor A signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.

Symptoms

  • Possible reduced power or limp mode
  • MIL illuminated
  • Possible abnormal turbocharger noise

Possible causes

  • Turbocharger actuator or position sensor fault
  • Sticking variable geometry mechanism
  • Charge-air or vacuum leak
  • Wiring or connector fault

Recommended checks

  • Compare specified vs actual boost with live data
  • Check actuator movement over the full range
  • Check hoses and vacuum lines
  • Inspect wiring and connectors

Related and nearby codes

How to read P25C5

P

Powertrain: engine, transmission and driveline systems.

2

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

5C5

Specific fault index within the subsystem.

Frequently asked questions about P25C5

What does P25C5 mean?

Brake Booster Temperature Sensor A Circuit Range/Performance. The control module judged the Brake Booster Temperature Sensor A signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions.

Is P25C5 generic or manufacturer-specific?

P25C5 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P25C5 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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