By BAT Team (Contact Me)
Last Updated 2017-01-17
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Manufacturer Specific Definitions for P1421

MakeFault Location
AudiSecondary air injection (AIR) valve/solenoid - short to ground
BmwEngine position system B, bank 1 – performance
BuickIntake Air Low Pressure Switch Circuit High Voltage
CadillacIntake Air Low Pressure Switch Circuit High Voltage
ChevroletIntake Air Low Pressure Switch Circuit High Voltage
CitroenCatalyst Damage
FordCatalyst Damage
GmIntake Air Low Pressure Switch Circuit High Voltage
InfinitiCold start emission control – malfunction
LexusEvaporative emission (EVAP) system – large leak
LincolnCatalyst Damage
MercuryCatalyst Damage
MitsubishiClogged Or Dirty Catalyst
NissanCold start emission control – malfunction
PeugeotCatalyst Damage
SaabExhaust gas recirculation (EGR) system -voltage high
SubaruExhaust gas recirculation (EGR) system – voltage high
SuzukiEvaporative emission (EVAP) canister purge valve – mechanical fault
ToyotaEVAP Canister Gross Leak
VolkswagenSecondary air injection (AIR) valve/ solenoid - short to ground

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