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International Automotive Technicians Network

Diagnostic Trouble Code Index for March 2023

Note: This is a professional automotive technician's resource.
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Diagnostic Trouble Codes (DTC)
Count Trouble Code Sample Definition Manufacturers
4P0300Multiple Cylinder Misfire DetectedChevrolet, Mercedes-Benz, Pontiac
2P0172Fuel System Rich (Bank 1)Ford, Honda
2P0304Cylinder 4 Misfire DetectedHonda, Mercedes-Benz
2P0491Secondary AIR System Insufficient Flow Detected (Bank 1)Volkswagen
1C0561System Disabled Information StoredBuick
1C1A00Control module can bus off. VDMLand Rover
1P0001Fuel Quality Control Circuit / OpenFord
1P0014Exhaust Camshaft Position System PerformanceBuick
1P0017Crankshaft Position - Exhaust Camshaft Position CorrelationBuick
1P0030Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Control Circuit MalfunctionFord
1P0068Throttle Body Airflow PerformancePorsche
1P0073Ambient Air Temperature Sensor Circuit High VoltageChevrolet
1P0088Fuel Rail Pressure Too HighFord
1P0090Fuel Pressure Regulator 1 Control Circuit MalfunctionChevrolet
1P0114Intake Air Temperature Sensor Circuit ErraticHyundai
1P0123TP Sensor Circuit High VoltageNissan
1P0135Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit MalfunctionFord
1P0156Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit MalfunctionMercury
1P0158Heated Oxygen Sensor (Bank 2 Sensor 2) Circuit High VoltageMercury
1P0161Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit MalfunctionMercury
1P0222Throttle Position Sensor 2 Circuit Low VoltageNissan
1P0303Cylinder 3 Misfire DetectedPontiac
1P0341CMP Sensor PerformanceBuick
1P0391Exhaust Camshaft Position Sensor Performance (Bank 2)Buick
1P0403EGR Solenoid Control Circuit MalfunctionDodge
1P0406EGR Position Sensor Circuit High VoltageDodge
1P0420Catalyst Efficiency Below Normal (Bank 1)Ford
1P0430Catalyst System Low Efficiency (Bank 2)Jeep
1P0457Loose Fuel CapJeep
1P0496EVAP Canister Purge System High Purge FlowBuick
1P0500Vehicle Speed Sensor Circuit MalfunctionSubaru
1P0507Idle Speed HighSubaru
1P050ECold Start Engine Exhaust Temperature Out-Of-RangeJeep
1P0872Transmission Fluid Pressure Switch 3 Circuit Low VoltageLand Rover
1P1131Heated Oxygen Sensor (Bank 1 Sensor 1) Indicates A/F Ratio Too LeanMercury
1P1151Heated Oxygen Sensor (Bank 2 Sensor 1) Indicates A/F Ratio Too LeanMercury
1P1270Engine RPM / Vehicle Speed Limit ReachedMercury
1P1400Cold Start Emission Reduction Control SystemChevrolet
1P1540Air Conditioning Refrigerant Over-Pressure - Air Conditioning DisabledSubaru
1P1705Throttle Position Sensor Circuit MalfunctionInfiniti
1P1710Turbine Revolution Sensor Circuit MalfunctionFord
1P2128Accelerator Pedal Position Sensor 2 Circuit High VoltageInfiniti
1P2138Accelerator Pedal Position Sensor 1-2 Correlation ErrorInfiniti
1P2172High Airflow / Vacuum Leak Detected (Instantaneous Accumulation)Jeep
1P2196Heated Oxygen Sensor (Bank 1 Sensor 1) Stuck RichFord
1P2271Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck RichFord
1P2433Secondary Air Injection System Pressure Sensor Circuit High VoltageToyota
1U1288VDM lost comm with park brake.Land Rover
1U4168Invalid data received vehicle dynamics control moduleLand Rover