Diagnostic Trouble Code Index for June 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 |
| 1 | P0012 | Camshaft Position 'A' Over-Retarded (Bank 1) | Nissan |
| 1 | P0016 | Crankshaft/Camshaft Timing Misalignment | Ford |
| 1 | P0022 | Camshaft Position 'A' Timing Over-Retarded (Bank 2) | Toyota |
| 1 | P0174 | Fuel System Lean (Bank 2) | Chevrolet |
| 1 | P0234 | Turbocharger Engine Overboost | Hyundai |
| 1 | P0300 | Multiple Cylinder Misfire Detected | Chevrolet |
| 1 | P0335 | Crankshaft Position Sensor Circuit Malfunction | Chevrolet |
| 1 | P0420 | Catalyst Efficiency Below Normal (Bank 1) | Chevrolet |
| 1 | P0430 | Catalyst System Low Efficiency (Bank 2) | Chevrolet |
| 1 | P062B | Control Module Fuel Injector Control Performance | GMC |
| 1 | P0685 | Engine Controls Ignition Relay Control Circuit Malfunction | Jeep |
| 1 | P0688 | ASD Relay Sense Circuit Low | Jeep |
