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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Fault codes
P1411
EGR Valve Position Sensor Circuit Range/Performance Malfunction
Toyota
Auxiliary Emissions Control
Medium severity
P1415
Air Pump Circuit Malfunction/AIR System Bank 1
Toyota
Auxiliary Emissions Control
Medium severity
P1431
Misfire Monitor Disabled Unable to Learn Trigger Wheel Profile
Toyota
Ignition System
High severity
P1438
A/C Evaporator Air Temperature Circuit Range/Performance
Toyota
Auxiliary Emissions Control
High severity
P1440
Secondary Air Injection Vacuum Switching Valve Circuit Malfunction Bank 1
Toyota
Auxiliary Emissions Control
Medium severity
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