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TuningBot DTC Database · v4.37.15

P0239 Turbocharger Boost Sensor B Circuit Malfunction

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

P · PowertrainEngineOBD2

What P0239 means

P0239
Turbocharger Boost Sensor B Circuit Malfunction Generic · engine Data confidence 90%

The control module detected improper operation of the Turbocharger Boost Sensor B circuit.

Symptoms

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

Possible causes

  • Wiring
  • MAP sensor
  • ECM

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 P0239

P

Powertrain: engine, transmission and driveline systems.

0

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

239

Specific fault index within the subsystem.

Frequently asked questions about P0239

What does P0239 mean?

Turbocharger Boost Sensor B Circuit Malfunction. The control module detected improper operation of the Turbocharger Boost Sensor B circuit.

Is P0239 generic or manufacturer-specific?

P0239 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0239 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

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