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TuningBot DTC Database · v4.37.15

P1078 BMW - Fuel trim (FT), Bank 1 - range/performance problem

Manufacturer-specific interpretation for BMW. All interpretations of P1078

P · PowertrainFuelOBD2

What P1078 means

P1078
Fuel trim (FT), Bank 1 - range/performance problem BMW · fuel Data confidence 62%

The control module judged the Fuel trim (FT), Bank 1 behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by BMW.

Possible causes

  • Wiring
  • connectors
  • intake/fuel system
  • injectors
  • HO2S
  • MAF sensor

Related and nearby codes

How to read P1078

P

Powertrain: engine, transmission and driveline systems.

1

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

078

Specific fault index within the subsystem.

Frequently asked questions about P1078

What does P1078 mean?

Fuel trim (FT), Bank 1 - range/performance problem. The control module judged the Fuel trim (FT), Bank 1 behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by BMW.

Is P1078 generic or manufacturer-specific?

P1078 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 P1078 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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