TuningBot DTC Database · v4.37.15
Manufacturer-specific interpretation for Subaru. All interpretations of P1139
The control module judged the Heated oxygen sensor (HO2S) 1, heater control behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Subaru.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Heated oxygen sensor (HO2S) 1, heater control - range/performance problem. The control module judged the Heated oxygen sensor (HO2S) 1, heater control behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Subaru.
P1139 is a manufacturer-specific code. In this database it is documented for: Subaru. The same number can mean something different on other brands.
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.
Understand the system behind this code: Oxygen Sensors (Lambda)
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