Diagnostic Trouble Code Index for May 2026
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 | Jeep, Mazda, Nissan |
| 1 | P0019 | Crankshaft Position - Exhaust Camshaft Position Correlation (Bank 2) | Jeep |
| 1 | P0102 | MAF Sensor Circuit Low Frequency | Nissan |
| 1 | P0171 | Fuel System Lean (Bank 1) | Nissan |
| 1 | P0183 | Fuel Tank Temperature Sensor Circuit High Voltage | Volvo |
| 1 | P0191 | Fuel Rail Pressure Sensor Performance | Hyundai |
| 1 | P0301 | Cylinder 1 Misfire Detected | Jeep |
| 1 | P0305 | Cylinder 5 Misfire Detected | Ram |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Hyundai |
| 1 | P105C | Intake Valve stuck in low position | Ram |
| 1 | P1120 | TP Sensor 1 Circuit Malfunction | Chevrolet |
| 1 | P1220 | TP Sensor 2 Circuit Malfunction | Chevrolet |
| 1 | P1516 | TAC Module Throttle Actuator Position Performance | Chevrolet |
| 1 | P171. | Fuel Trim System Lean | Cadillac |
| 1 | P174. | Fuel Trim System Lean Bank 2 | Cadillac |
| 1 | P2191 | Fuel Trim System Too Lean At Higher Load Multiple (Bank 1) | Hyundai |
| 1 | P300. | Engine misfire | Cadillac |
| 1 | P3401 | Cylinder 1 Deactivation Solenoid Control Circuit Malfunction | Dodge |
| 1 | P3425 | Cylinder 4 Deactivation Solenoid Control Circuit Malfunction | Dodge |
| 1 | P3449 | Cylinder 7 Deactivation Solenoid Control Circuit Malfunction | Dodge |
