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TuningBot DTC Database · v4.37.15

P226B Turbocharger/Supercharger Boost Pressure Too High - Mechanical

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

P · PowertrainEngineOBD2

What P226B means

P226B
Turbocharger/Supercharger Boost Pressure Too High - Mechanical Generic · engine Data confidence 78%

The control module detected that the Turbocharger/Supercharger Boost Pressure value was above the expected limit.

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

P22 range
P2200P2201P2202P2203P2204P2205P2206P2207P2208P2209P220AP220BP220CP220DP220EP220FP2210P2211

How to read P226B

P

Powertrain: engine, transmission and driveline systems.

2

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

26B

Specific fault index within the subsystem.

Frequently asked questions about P226B

What does P226B mean?

Turbocharger/Supercharger Boost Pressure Too High - Mechanical. The control module detected that the Turbocharger/Supercharger Boost Pressure value was above the expected limit.

Is P226B generic or manufacturer-specific?

P226B is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P226B 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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