TuningBot DTC Database · v4.37.14
4 manufacturer-specific interpretations across 4 manufacturers in the TuningBot DTC database.
BMWThe control module detected that the WT overload protection - control motor current value was above the expected limit. This is the manufacturer-specific definition used by BMW.
DodgeThe control module detected a fault associated with the Fuel Pump Circuit Hi circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Dodge.
HondaThe control module determined that the Valve position control circuit - valve did not change state as commanded and appears stuck. This is the manufacturer-specific definition used by Honda.
MitsubishiThe control module detected a fault associated with the Engine Oil Control Valve Circuit Bank 1 circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mitsubishi.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (4 interpretations). The control module detected that the WT overload protection - control motor current value was above the expected limit. This is the manufacturer-specific definition used by BMW.
P1021 is a manufacturer-specific code. In this database it is documented for: BMW, Dodge, Honda, Mitsubishi. 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 and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Understand the system behind this code: Diagnostic Strategy and DTC Logic
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