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TuningBot DTC Database · v4.37.15

P23AA Turbocharger/Supercharger Bypass Valve A Stuck

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

P · PowertrainEngineOBD2

What P23AA means

P23AA
Turbocharger/Supercharger Bypass Valve A Stuck Generic · engine Data confidence 65%

The control module registered the fault condition described as "Turbocharger/Supercharger Bypass Valve A Stuck".

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

P23 range
P2300P2301P2302P2303P2304P2305P2306P2307P2308P2309P230AP230BP230CP230DP230EP230FP2310P2311

How to read P23AA

P

Powertrain: engine, transmission and driveline systems.

2

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

3AA

Specific fault index within the subsystem.

Frequently asked questions about P23AA

What does P23AA mean?

Turbocharger/Supercharger Bypass Valve A Stuck. The control module registered the fault condition described as "Turbocharger/Supercharger Bypass Valve A Stuck".

Is P23AA generic or manufacturer-specific?

P23AA is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P23AA 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: Diagnostic Strategy and DTC Logic

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