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TuningBot DTC Database · v4.37.15

P128A Honda - Valve position control circuit - valve stuck off

Manufacturer-specific interpretation for Honda. All interpretations of P128A

P · PowertrainEngineOBD2

What P128A means

P128A
Valve position control circuit - valve stuck off Honda · engine Data confidence 62%

The control module determined that the Valve position control circuit - valve did not change state as commanded and appears stuck. This is the manufacturer-specific definition used by Honda.

Possible causes

  • Oil level
  • wiring
  • engine oil pressure sensor
  • rocker arm oil control valve

Related and nearby codes

How to read P128A

P

Powertrain: engine, transmission and driveline systems.

1

Manufacturer-defined range: the meaning can differ between brands.

28A

Specific fault index within the subsystem.

Frequently asked questions about P128A

What does P128A mean?

Valve position control circuit - valve stuck off. The control module determined that the Valve position control circuit - valve did not change state as commanded and appears stuck. This is the manufacturer-specific definition used by Honda.

Is P128A generic or manufacturer-specific?

P128A is a manufacturer-specific code. In this database it is documented for: Honda. The same number can mean something different on other brands.

Can TuningBot remove P128A 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 tuningStage 1 dyno results for Honda engines See the results →

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