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

P1025 Valve Pause System Sticking Off
Honda Fuel and Air Metering High severity
P1028 Intake Manifold Air Control Solenoid Short Open Circuit
Honda Fuel and Air Metering High severity
P1031 HO2S Heater Current Monitor Control Circuit Banks 1 and 2 Sensor 1
Honda Fuel and Air Metering Medium severity
P1036 Nitrogen Oxides Sensor Short To Positive
Honda Auxiliary Emissions Control Medium severity
P1039 Vehicle Speed Signal Missing or Improper
Honda Vehicle Speed and Idle Control System High severity
P1042 Injector 2 Supply Voltage Circuit Malfunction
Honda Injector Circuit High severity
P1043 Injector 3 Supply Voltage Short Circuit
Honda Injector Circuit High severity
P1044 Injector 3 Supply Voltage Circuit Malfunction
Honda Injector Circuit High severity
P1045 No Latched B 1/2 Volt Drop
Honda Vehicle Speed and Idle Control System High severity
P1047 Bank 1 Camshaft Adjustment Valve 1 Electrical Malfunction
Honda Ignition System High severity
P1052 Air Fuel Ratio Sensor 1 Heater Control Circuit High Bank 2
Honda Fuel and Air Metering High severity
P1060 Change In MAP Reading Out Of Limits
Honda Fuel and Air Metering High severity
P1064 A/C Request Circuit Low
Honda Computer Output Circuit High severity
P1073 Mass Air Flow Sensor 2 Signal Too Small
Honda Fuel and Air Metering High severity
P1077 Intake Manifold Runner Control System Malfunction Low RPM
Honda Fuel and Air Metering High severity

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