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International Automotive Technicians Network

Diagnostic Trouble Code Index for September 2021

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Diagnostic Trouble Codes (DTC)
Count Trouble Code Sample Definition Manufacturers
3P0301Cylinder 1 Misfire DetectedFord, Mazda, Mitsubishi
2P0174Fuel System Lean (Bank 2)Ford, Toyota
2P0300Multiple Cylinder Misfire DetectedDodge, Mazda
2P0302Cylinder 2 Misfire DetectedDodge, Toyota
2P0340Camshaft Position Sensor Circuit MalfunctionDodge, Jeep
2P0420Catalyst Efficiency Below Normal (Bank 1)Chevrolet, Ford
2P2188Fuel Trim System Rich At Idle (Bank 1)Mercedes-Benz, Volkswagen
1P0016Crankshaft/Camshaft Timing MisalignmentAudi
1P0017Crankshaft Position - Exhaust Camshaft Position CorrelationKia
1P0031Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Low VoltageMercedes-Benz
1P0051Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Low VoltageMercedes-Benz
1P011BIntake Air Temperature Sensor Circuit MalfunctionToyota
1P0138Heated Oxygen Sensor (Bank 1 Sensor 2) Circuit High VoltageChevrolet
1P0171Fuel System Lean (Bank 1)Toyota
1P0172Fuel System Rich (Bank 1)Ford
1P0177Water In FuelFord
1P0263Cylinder 1 Balance System MalfunctionAudi
1P0266Cylinder 2 Balance System MalfunctionAudi
1P0269Cylinder 3 Balance System MalfunctionAudi
1P0272Cylinder 4 Balance System MalfunctionAudi
1P0275Cylinder 5 Balance System MalfunctionAudi
1P0278Cylinder 6 Balance System MalfunctionAudi
1P0304Cylinder 4 Misfire DetectedChrysler
1P0305Cylinder 5 Misfire DetectedHonda
1P0306Cylinder 6 Misfire DetectedAudi
1P0316Misfire Occurred In First 1,000 RevolutionsFord
1P0344Camshaft Position Sensor Signal IntermittentDodge
1P0352Ignition Coil 2 Control Circuit MalfunctionMazda
1P0394Camshaft Position Sensor 1 - Signal IntermittentDodge
1P0406EGR Position Sensor Circuit High VoltageDodge
1P0456EVAP System Very Small Leak DetectedDodge
1P0492Secondary air flow bank 2BMW
1P0520Engine Oil Pressure Sensor Circuit MalfunctionChrysler
1P0606Control Module Internal PerformanceDodge
1P0672Glow Plug No. 2 Control Circuit MalfunctionFord
1P06975-Volt Reference 3 Circuit MalfunctionGMC
1P0705Transaxle Range Switch Circuit MalfunctionNissan
1P0720Output Shaft Speed Sensor Circuit MalfunctionFord
1P1082Fuel filter pressure sensor performanceGMC
1P130ACylinder DisablingAudi
1P1336CKP Sensor System Variation Not LearnedGMC
1P1399Random misfireHonda
1P140CEGR slow response decreasing flowChevrolet
1P1450Unable to Bleed Up Fuel Tank VacuumVolkswagen
1P161AIncorrect response from Immobilizer Control ModuleFord
1P1777Step Motor - Circuit MalfunctionNissan
1P2127Accelerator Pedal Position Sensor 2 Circuit Low VoltageDodge
1P2138Accelerator Pedal Position Sensor 1-2 Correlation ErrorGMC
1P219ABank 1 air-fuel ratio imbalanceFord
1P219Bfuel trim cylinder balance bank 2Ford
1P2262Turbo/Super Charger Boost Pressure Not Detected - MechanicalRam
1P226CTurbo Boost SlowRam
1P2271Heated Oxygen Sensor (Bank 1 Sensor 2) Signal Stuck RichChevrolet
1P2279Intake Air System LeakMercedes-Benz
1P2463Diesel Particulate Filter Soot Level AccumulationGMC
1U0100Lost Communication With ECM/PCMGMC
1U0101Lost Communication With TCMNissan
1U1000Class 2 Communication MalfunctionNissan
1U4010Invalid data from ecm/pcm a not current occuant classification systemFord
1U4016Invalid data from ecm/pcm a not current hvacFord
1U4018Invalid data received from ECM/PCMFord