Diagnostic Trouble Code Index for November 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 |
| 1 | P0305 | Cylinder 5 Misfire Detected | Pontiac |
| 1 | P0306 | Cylinder 6 Misfire Detected | Pontiac |
| 1 | P0354 | Ignition Coil 4 Control Circuit Malfunction | Ford |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Chevrolet |
| 1 | P0627 | Fuel Pump Relay Control Circuit Malfunction | Ford |
| 1 | P2138 | Accelerator Pedal Position Sensor 1-2 Correlation Error | Mercedes-Benz |
| 1 | P2196 | Heated Oxygen Sensor (Bank 1 Sensor 1) Stuck Rich | Ford |
| 1 | P2198 | Air Fuel Ratio Sensor (Bank 2 Sensor 1) Signal Stuck "Rich" | Ford |
| 1 | P6410 | Output 1 for the reference voltage of the sensors has an electrical fault | Mercedes-Benz |
| 1 | U1110 | Lost Vehicle Speed Message | Dodge |
| 1 | U1120 | Lost Wheel Distance Message | Dodge |
| 1 | U1141 | U11bc- | Dodge |
