TuningBot DTC Database · v4.37.14
13 manufacturer-specific interpretations across 12 manufacturers in the TuningBot DTC database.
Alfa RomeoThe control module detected improper operation of the Air flow meter or circuit. This is the manufacturer-specific definition used by Alfa Romeo.
ChevroletThe control module detected a fault associated with the Throttle motor position sensor 1/2 - signalvariation circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chevrolet.
ChryslerThe control module detected a fault associated with the Throttle Position (TP) Sensor 1 - 2 Correlation circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Chrysler.
DodgeThe control module detected improper operation of the CAN data bus, rcs. This is the manufacturer-specific definition used by Dodge.
FordThe control module detected improper operation of the Traction Control System. This is the manufacturer-specific definition used by Ford.
HondaThe control module detected a fault associated with the Throttle motor position sensor 1/2 - signal variation circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Honda.
HyundaiThe control module detected a fault associated with the Feedback (Main Duty) Solenoid 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.
JaguarThe control module judged the Pedal Demand Sensor B signal implausible: it stayed inside electrical limits but did not match the value expected for the current operating conditions. This is the manufacturer-specific definition used by Jaguar.
MazdaThe control module detected a fault associated with the Traction Control System circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mazda.
Mercedes-BenzThe control module detected a fault associated with the CAN Communication ETC Or ETS Interrupted circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mercedes-Benz.
MINIThe control module judged the Pedal Position Sensor 2 behaviour implausible for the current operating conditions. This is the manufacturer-specific definition used by MINI.
VAGThe control module detected a short circuit to ground in the Cylinder Shut Off Exhaust Valves circuit. This is the manufacturer-specific definition used by Audi.
The control module detected a short circuit to ground in the Cylinder Shut Off Exhaust Valves circuit. This is the manufacturer-specific definition used by Volkswagen.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Diagnostic Trouble Code (13 interpretations). The control module detected improper operation of the Air flow meter or circuit. This is the manufacturer-specific definition used by Alfa Romeo.
P1221 is a manufacturer-specific code. In this database it is documented for: Alfa Romeo, Chevrolet, Chrysler, Dodge, Ford, Honda, Hyundai, Jaguar, Mazda, Mercedes-Benz, MINI, 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 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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