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

P1000 On Board Diagnostic System Readiness Test Not Complete

Chevrolet Auxiliary Emissions Control High severity

P1005 Manifold Tuning Valve Control Performance

Chevrolet Fuel and Air Metering High severity

P1009 Variable Valve Timing Control Advance Malfunction

Chevrolet Fuel and Air Metering High severity

P1013 Intake Camshaft Position Actuator Park Position Bank 2

Chevrolet Ignition System High severity

P1018 Intake Manifold Runner Bank 2 Lower Limit Not Reached

Chevrolet Fuel and Air Metering High severity

P1019 Valvetronic Eccentric Shaft Sensor Power Supply

Chevrolet Fuel and Air Metering High severity

P1020 Valvetronic Eccentric Shaft Sensor Power Supply

Chevrolet Fuel and Air Metering High severity

P1024 Valvetronic Adjustment Range

Chevrolet Fuel and Air Metering High severity

P1027 Intake Manifold Air Control Solenoid Short To Ground

Chevrolet Fuel and Air Metering High severity

P1029 Intake Manifold Air Control Valve Position Sensor Upper Limit Not Reached

Chevrolet Fuel and Air Metering High severity

P1032 HO2S Heater Warm Up Control Circuit Banks 1 and 2 Sensor 1

Chevrolet Fuel and Air Metering Medium severity

P1035 Nitrogen Oxides Sensor Range Performance Problem

Chevrolet Auxiliary Emissions Control Medium severity

P1039 Vehicle Speed Signal Missing or Improper

Chevrolet Vehicle Speed and Idle Control System High severity

P1042 Injector 2 Supply Voltage Circuit Malfunction

Chevrolet Injector Circuit High severity

P1048 Bank 1 Camshaft Adjustment Valve 1 Short To Positive

Chevrolet Ignition System High severity