Diagnostic Trouble Code Index for March 2025
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 |
| 3 | P0300 | Multiple Cylinder Misfire Detected | Ford, Kia, Lexus |
| 2 | P0171 | Fuel System Lean (Bank 1) | Ford, Mazda |
| 2 | P0301 | Cylinder 1 Misfire Detected | Lexus, Mini |
| 2 | P0303 | Cylinder 3 Misfire Detected | Kia, Lexus |
| 1 | B124D | Tire Pressure Sensor-General Signal Failure | Ford |
| 1 | P0102 | MAF Sensor Circuit Low Frequency | Volkswagen |
| 1 | P0132 | Heated Oxygen Sensor (Bank 1 Sensor 1) Circuit High Voltage | Chevrolet |
| 1 | P0152 | Heated Oxygen Sensor (Bank 2 Sensor 1) Circuit High Voltage | Chevrolet |
| 1 | P0174 | Fuel System Lean (Bank 2) | Ford |
| 1 | P0401 | Insufficient EGR Flow Detected | Volkswagen |
| 1 | P0403 | EGR Solenoid Control Circuit Malfunction | Jeep |
| 1 | P0442 | EVAP System Small Leak Detected | Mazda |
| 1 | P0446 | EVAP Vent System Performance | Chevrolet |
| 1 | P1602 | Powertrain Control Module Not Programmed | Volkswagen |
| 1 | P161A | Incorrect response from immobilizer control module | Ford |
| 1 | P2122 | Accelerator Pedal Position Sensor 1 Circuit Low Voltage | Ford |
| 1 | P2191 | Fuel Trim System Too Lean At Higher Load Multiple (Bank 1) | Kia |
| 1 | U0073 | Control Module Communication Bus Off | Toyota |
| 1 | U0123 | Lost Communication With Yaw Rate Sensor | Toyota |
| 1 | U0124 | Lost Communication With Lateral Acceleration Sensor Module | Toyota |
| 1 | U0126 | Lost Communication With Steering Angle Sensor Module | Toyota |
