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TuningBot DTC Database · v4.37.15

P1048 BMW - Heated oxygen sensor (HO2S) 1, bank 1 - open circuit

Manufacturer-specific interpretation for BMW. All interpretations of P1048

P · PowertrainEmissionsOBD2

What P1048 means

P1048
Heated oxygen sensor (HO2S) 1, bank 1 - open circuit BMW · emissions Data confidence 62%

The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) 1, bank 1 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by BMW.

Possible causes

  • Wiring
  • connections
  • HO2S
  • catalytic convertor plugged
  • mechanical fault
  • ECM

Related and nearby codes

How to read P1048

P

Powertrain: engine, transmission and driveline systems.

1

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

048

Specific fault index within the subsystem.

Frequently asked questions about P1048

What does P1048 mean?

Heated oxygen sensor (HO2S) 1, bank 1 - open circuit. The control module detected an interruption (open circuit) in the Heated oxygen sensor (HO2S) 1, bank 1 circuit, so the expected electrical continuity was not present. This is the manufacturer-specific definition used by BMW.

Is P1048 generic or manufacturer-specific?

P1048 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 P1048 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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