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TuningBot DTC Database · v4.37.15

P1749 BMW - Secondary Pressure Solenoid Communication Error

Manufacturer-specific interpretation for BMW. All interpretations of P1749

P · PowertrainEngineOBD2

What P1749 means

P1749
Secondary Pressure Solenoid Communication Error BMW · engine Data confidence 62%

The control module detected a communication fault involving Secondary Pressure Solenoid on the vehicle network. This is the manufacturer-specific definition used by BMW.

Recommended checks

  • Perform a full module scan
  • Review freeze-frame and occurrence data
  • Compare commanded and measured values
  • Check applicable OEM service information

Related and nearby codes

How to read P1749

P

Powertrain: engine, transmission and driveline systems.

1

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

749

Specific fault index within the subsystem.

Frequently asked questions about P1749

What does P1749 mean?

Secondary Pressure Solenoid Communication Error. The control module detected a communication fault involving Secondary Pressure Solenoid on the vehicle network. This is the manufacturer-specific definition used by BMW.

Is P1749 generic or manufacturer-specific?

P1749 is a manufacturer-specific code. In this database it is documented for: BMW. The same number can mean something different on other brands.

Can TuningBot remove P1749 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 BMW engines See the results →

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