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

P1036 Nitrogen Oxides Sensor Short To Positive

Toyota Auxiliary Emissions Control Medium severity

P1037 Nitrogen Oxides Sensor Short To Ground

Toyota Auxiliary Emissions Control Medium severity

P1041 Injector 2 Supply Voltage Short Circuit

Toyota Injector Circuit High severity

P1044 Injector 3 Supply Voltage Circuit Malfunction

Toyota Injector Circuit High severity

P1048 Bank 1 Camshaft Adjustment Valve 1 Short To Positive

Toyota Ignition System High severity

P1052 Air Fuel Ratio Sensor 1 Heater Control Circuit High Bank 2

Toyota Fuel and Air Metering High severity

P1057 Valvetronic Relay Activation

Toyota Fuel and Air Metering High severity

P1062 Valvetronics Power Limitation

Toyota Fuel and Air Metering High severity

P1068 A/C Request Circuit High

Toyota Computer Output Circuit High severity

P1073 Mass Air Flow Sensor 2 Signal Too Small

Toyota Fuel and Air Metering High severity

P1077 Intake Manifold Runner Control System Malfunction Low RPM

Toyota Fuel and Air Metering High severity

P1081 Exhaust Bank 3- Mixture Adaption Range 1 Lower Lean Limit Not Reached

Toyota Auxiliary Emissions Control High severity

P1086 Fuel Control Mixture Rich Bank 2 Sensor 1

Toyota Fuel and Air Metering High severity

P1088 O2 Sensor Circuit Slow Response in Rich Control Range Bank 1 Sensor 1

Toyota Fuel and Air Metering Medium severity

P1094 O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 Sensor 1

Toyota Fuel and Air Metering Medium severity