Diagnostic Trouble Code Index for October 2023
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 |
| 2 | P0305 | Cylinder 5 Misfire Detected | Ford, Hyundai |
| 2 | P0306 | Cylinder 6 Misfire Detected | Chevrolet, Ford |
| 1 | P0016 | Crankshaft/Camshaft Timing Misalignment | Chevrolet |
| 1 | P0052 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit High Voltage | Dodge |
| 1 | P0135 | Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Circuit Malfunction | Ford |
| 1 | P0141 | Heated Oxygen Sensor (Bank 1 Sensor 2) Heater Circuit Malfunction | Ford |
| 1 | P0155 | Heated Oxygen Sensor (Bank 2 Sensor 1) Heater Circuit Malfunction | Ford |
| 1 | P0161 | Heated Oxygen Sensor (Bank 2 Sensor 2) Heater Circuit Malfunction | Ford |
| 1 | P0171 | Fuel System Lean (Bank 1) | Jeep |
| 1 | P0174 | Fuel System Lean (Bank 2) | Jeep |
| 1 | P0195 | Engine Oil Temperature Circuit Plausibility | Ford |
| 1 | P0197 | Engine Oil Temperature Sensor Circuit Low | Ford |
| 1 | P0300 | Multiple Cylinder Misfire Detected | Suzuki |
| 1 | P0320 | No Crank Reference Signal To PCM | Ford |
| 1 | P0403 | EGR Solenoid Control Circuit Malfunction | Ford |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Dodge |
| 1 | P0430 | Catalyst System Low Efficiency (Bank 2) | Dodge |
| 1 | P043E | EVAP System Reference Orifice Clog Up | Toyota |
| 1 | P043F | EVAP System Reference Orifice High Flow | Toyota |
| 1 | P0456 | EVAP System Very Small Leak Detected | Toyota |
| 1 | P0575 | Cruise Control Switch Signal Circuit Malfunction | Chevrolet |
| 1 | P0645 | A/C Clutch Relay Circuit Malfunction | Ford |
| 1 | P144B | Ford | |
| 1 | P1450 | Unable to Bleed Up Fuel Tank Vacuum | Ford |
| 1 | P219F | Cylinder 4 air fuel ratio imbalance | Toyota |
| 1 | P229F | nox sensor bank 1 failure | Jaguar |
| 1 | P2401 | EVAP Leak Detection Pump Control Circuit Low | Toyota |
| 1 | P2402 | EVAP Leak Detection Pump Control Circuit High | Toyota |
| 1 | P2420 | EVAP Switching Valve Control Circuit High | Toyota |
| 1 | P3660 | Camshaft positioin sensor b curcuit range /performance bank 1 | Hyundai |
| 1 | P4420 | Evaporative emission system small leak | Hyundai |
| 1 | U0100 | Lost Communication With ECM/PCM | Chevrolet |
| 1 | U0101 | Lost Communication With TCM | Nissan |
| 1 | U0102 | Lost communication with transfer case control module | Chevrolet |
| 1 | U0121 | Lost Communication With Antilock Brake System Module | Chevrolet |
| 1 | U0140 | Lost Communication With BCM | Chevrolet |
| 1 | U1000 | Class 2 Communication Malfunction | Nissan |
| 1 | U1041 | Loss of Electronic Brake Controller Communication | Chevrolet |
