OBD fault code library

Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.

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P1420 Catalyst Temperature Sensor Failure
Hyundai Auxiliary Emissions Control High severity
P1422 EGI Temperature Sensor Failure
Hyundai Auxiliary Emissions Control Medium severity
P1424 EGI Glow Plug Primary Failure
Hyundai Ignition System High severity
P1426 Tank Ventilation Valve Open Circuit
Hyundai Auxiliary Emissions Control Medium severity
P1427 EGI Mini MAF Failed Short Circuit
Hyundai Fuel and Air Metering High severity
P1428 EGI Mini MAF Failed Open Circuit
Hyundai Fuel and Air Metering High severity
P1432 Thermostat Heater Control Circuit Failure
Hyundai Fuel and Air Metering High severity
P1433 A/C Refrigerant Temperature Circuit Low
Hyundai Auxiliary Emissions Control High severity
P1435 A/C Refrigerant Temperature Circuit Range/Performance
Hyundai Auxiliary Emissions Control High severity
P1436 A/C Evaporator Air Temperature Circuit Low
Hyundai Auxiliary Emissions Control High severity
P1438 A/C Evaporator Air Temperature Circuit Range/Performance
Hyundai Auxiliary Emissions Control High severity
P1440 EVAP System Vent Circuit
Hyundai Auxiliary Emissions Control Low severity

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