TuningBot DTC Database · v4.37.15
Manufacturer-specific interpretation for Lexus. All interpretations of P1421
The control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP) system - large. This is the manufacturer-specific definition used by Lexus.
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Evaporative emission (EVAP) system - large leak. The control module detected a condition consistent with a leak affecting the Evaporative emission (EVAP) system - large. This is the manufacturer-specific definition used by Lexus.
P1421 is a manufacturer-specific code. In this database it is documented for: Lexus. 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: EVAP System
ItalianoIT
DeutschDE
EspañolES
PortuguêsPT
FrançaisFR
РусскийRU