TuningBot DTC Database · v4.37.15
Manufacturer-specific interpretation for Mazda. All interpretations of P1142
The control module detected that the signal in the Heated oxygen sensor (HO2S) 2, bank 1, heater control circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Mazda.
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) 2, bank 1, heater control - circuit high. The control module detected that the signal in the Heated oxygen sensor (HO2S) 2, bank 1, heater control circuit stayed above the expected operating range. This is the manufacturer-specific definition used by Mazda.
P1142 is a manufacturer-specific code. In this database it is documented for: Mazda. 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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