TuningBot DTC Database · v4.37.15
5 manufacturer-specific interpretations across 5 manufacturers in the TuningBot DTC database.
HyundaiThe control module detected a fault associated with the Idle CO Potentiometer circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
Mercedes-BenzThe control module detected improper operation of the Mass air flow (MAF) sensor(s). This is the manufacturer-specific definition used by Mercedes-Benz.
NissanThe control module detected a fault associated with the Heated oxygen sensor (HO2S) 2, bank 1 - minimum voltage monitoring circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Nissan.
SubaruThe control module judged the Manifold absolute pressure (MAP) behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by Subaru.
VAGThe control module detected a fault associated with the Mass air flow (MAF) sensor, Bank 1 - supply voltage circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Audi.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (5 interpretations). The control module detected a fault associated with the Idle CO Potentiometer circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
P1146 is a manufacturer-specific code. In this database it is documented for: Hyundai, Mercedes-Benz, Nissan, Subaru, VAG. 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: MAF Sensor
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