Fuel & air metering

Meaning, symptoms, causes, diagnosis steps and repair cost for each code. Generic SAE codes apply to all makes; manufacturer-specific codes are marked.

100 codes
CodeWhat it meansSeverity
P0100Mass or Volume Air Flow "A" CircuitMedium
P0101Mass Air Flow Sensor Circuit Range/PerformanceMedium
P0102Mass or Volume Air Flow "A" Circuit Low InputMedium
P0103Mass or Volume Air Flow 'A' Circuit HighMedium
P0104Mass or Volume Air Flow 'A' Circuit Intermittent/ErraticMedium
P0105Manifold Absolute Pressure / Barometric Pressure CircuitMedium
P0106Manifold Absolute Pressure / Barometric Pressure Circuit Range/PerformanceMedium
P0107Manifold Absolute Pressure / Barometric Pressure Circuit Low InputMedium
P0108Manifold Absolute Pressure / Barometric Pressure Circuit High InputMedium
P0109Manifold Absolute Pressure/Barometric Pressure Circuit IntermittentMedium
P0110Intake Air Temperature Sensor 1 Circuit (Bank 1)Low
P0111Intake Air Temperature Sensor 1 Circuit Range/Performance (Bank 1)Low
P0112Intake Air Temperature Sensor 1 Circuit Low (Bank 1)Low
P0113Intake Air Temperature Sensor 1 Circuit High (Bank 1)Low
P0114Intake Air Temperature Sensor 1 Circuit IntermittentMedium
P0115Engine Coolant Temperature Sensor 1 CircuitMedium
P0116Engine Coolant Temperature Circuit Range/PerformanceMedium
P0117Engine Coolant Temperature Sensor 1 Circuit LowMedium
P0118Engine Coolant Temperature Sensor 1 Circuit HighMedium
P0119Engine Coolant Temperature Circuit IntermittentMedium
P0120Throttle / Pedal Position Sensor / Switch "A" CircuitHigh
P0121Throttle/Pedal Position Sensor/Switch "A" Circuit Range/PerformanceMedium
P0122Throttle / Pedal Position Sensor / Switch "A" Circuit Low InputHigh
P0123Throttle / Pedal Position Sensor / Switch "A" Circuit High InputHigh
P0124Throttle/Pedal Position Sensor/Switch 'A' Circuit IntermittentMedium
P0125Insufficient Coolant Temperature for Closed Loop Fuel ControlLow
P0126Insufficient Coolant Temperature for Stable OperationMedium
P0127Intake Air Temperature Too HighMedium
P0128Coolant Thermostat Below Regulating TemperatureLow
P0129Barometric Pressure Too LowMedium
P0130O2 Sensor Circuit (Bank 1, Sensor 1)Medium
P0131O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)Medium
P0132O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)Medium
P0133O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)Low
P0134O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)Medium
P0135O2 Sensor Heater Circuit (Bank 1 Sensor 1)Low
P0136O2 Sensor Circuit (Bank 1, Sensor 2)Low
P0137O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)Low
P0138O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)Low
P0139O2 Sensor Circuit Slow OBDResponseMedium
P0140O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 2)Low
P0141O2 Sensor Heater Circuit (Bank 1 Sensor 2)Low
P0142O2 Sensor CircuitMedium
P0143O2 Sensor Circuit Low VoltageMedium
P0144O2 Sensor Circuit High VoltageHigh
P0145O2 Sensor Circuit Slow OBDResponseMedium
P0146O2 Sensor Circuit No Activity DetectedMedium
P0147O2 Sensor Heater CircuitMedium
P0148Fuel Delivery ErrorMedium
P0149Fuel Timing ErrorMedium
P0150O2 Sensor Circuit Malfunction (Bank 2, Sensor 1)Medium
P0151O2 Sensor Circuit Low Voltage (Bank 2, Sensor 1)Medium
P0152O2 Sensor Circuit High Voltage (Bank 2, Sensor 1)Medium
P0153O2 Sensor Circuit Slow Response (Bank 2, Sensor 1)Low
P0154O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 1)Medium
P0155O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 1)Low
P0156O2 Sensor Circuit Malfunction (Bank 2, Sensor 2)Low
P0157O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2)Low
P0158O2 Sensor Circuit High Voltage (Bank 2, Sensor 2)Low
P0159O2 Sensor Circuit Slow Response (Bank 2, Sensor 2)Low
P0160O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 2)Low
P0161O2 Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)Low
P0162O2 Sensor CircuitMedium
P0163O2 Sensor Circuit Low VoltageMedium
P0164O2 Sensor Circuit High VoltageHigh
P0165O2 Sensor Circuit Slow OBDResponseMedium
P0166O2 Sensor Circuit No Activity DetectedMedium
P0167O2 Sensor Heater CircuitMedium
P0168Fuel Temperature Too HighMedium
P0169Incorrect Fuel CompositionMedium
P0170Fuel Trim (Bank 1)Medium
P0171System Too Lean (Bank 1)Medium
P0172System Too Rich (Bank 1)Medium
P0173Fuel TrimMedium
P0174System Too Lean (Bank 2)Medium
P0175System Too RichMedium
P0176Fuel Composition Sensor CircuitMedium
P0177Fuel Composition Sensor Circuit Range/PerformanceMedium
P0178Fuel Composition Sensor Circuit LowMedium
P0179Fuel Composition Sensor Circuit HighMedium
P0180Fuel Temperature Sensor A Circuit MalfunctionMedium
P0181Fuel Temperature Sensor A Circuit Range/PerformanceMedium
P0182Fuel Temperature Sensor A Circuit Low InputMedium
P0183Fuel Temperature Sensor A Circuit High InputMedium
P0184Fuel Temperature Sensor A Circuit IntermittentMedium
P0185Fuel Temperature Sensor B CircuitMedium
P0186Fuel Temperature Sensor B Circuit Range/PerformanceMedium
P0187Fuel Temperature Sensor B Circuit LowMedium
P0188Fuel Temperature Sensor B Circuit HighMedium
P0189Fuel Temperature Sensor B Circuit IntermittentMedium
P0190Fuel Rail Pressure Sensor A Circuit MalfunctionHigh
P0191Fuel Rail Pressure Sensor Circuit Range/PerformanceMedium
P0192Fuel Rail Pressure Sensor Circuit LowMedium
P0193Fuel Rail Pressure Sensor Circuit HighMedium
P0194Fuel Rail Pressure Sensor Circuit IntermittentMedium
P0195Engine Oil Temperature SensorMedium
P0196Engine Oil Temperature Sensor Range/PerformanceMedium
P0197Engine Oil Temperature Sensor LowMedium
P0198Engine Oil Temperature Sensor HighMedium
P0199Engine Oil Temperature Sensor IntermittentMedium