As with other car manufacturers, Hyundai vehicles also use a set of diagnostic trouble codes (DTCs) to identify potential issues with various systems in the car. The specific codes can vary based on the Hyundai model, year, and the type of diagnostic system used. Here are some common Hyundai diagnostic trouble codes:
1. P0101 - Mass or Volume Air Flow Circuit Range/Performance Problem
2. P0171 - System Too Lean (Bank 1)
3. P0172 - System Too Rich (Bank 1)
4. P0300 - Random/Multiple Cylinder Misfire Detected
5. P0301 - Cylinder 1 Misfire Detected
6. P0302 - Cylinder 2 Misfire Detected
7. P0303 - Cylinder 3 Misfire Detected
8. P0304 - Cylinder 4 Misfire Detected
9. P0420 - Catalyst System Efficiency Below Threshold (Bank 1)
10. P0430 - Catalyst System Efficiency Below Threshold (Bank 2)
11. P0442 - Evaporative Emission System Leak Detected (Small Leak)
12. P0455 - Evaporative Emission System Leak Detected (Gross Leak)
13. P0507 - Idle Control System RPM Higher Than Expected
14. P1128 - Long Term Fuel Trim B1 System Too Lean
15. P1129 - Long Term Fuel Trim B1 System Too Rich
16. P1131 - HO2S Heater Circuit Low Voltage Bank 1 Sensor 1
17. P1133 - HO2S Insufficient Switching Bank 1 Sensor 1
18. P1134 - HO2S Transition Time Ratio Bank 1 Sensor 1
19. P1136 - HO2S Rich Average Bank 1 Sensor 1
20. P1150 - HO2S Rich Average Bank 2 Sensor 1
21. P1153 - HO2S Insufficient Switching Bank 2 Sensor 1
22. P1154 - HO2S Transition Time Ratio Bank 2 Sensor 1
23. P1157 - HO2S Lean Average Bank 2 Sensor 1
24. P1159 - Variable Intake Motor Malfunction (Bank 2)
25. P1166 - Heated Oxygen Sensor (HO2S) 1 Heater Control Circuit Bank 1 Sensor 1
26. P1167 - Heated Oxygen Sensor (HO2S) 1 Heater Power Circuit Bank 1 Sensor 1
27. P1168 - Heated Oxygen Sensor (HO2S) 1 Heater Power Circuit Low Voltage Bank 1 Sensor 1
28. P1186 - O2 Sensor Heater Circuit Voltage High Bank 1 Sensor 2
29. P1187 - O2 Sensor Heater Circuit Voltage Low Bank 2 Sensor 2
30. P1191 - ETS Limp Home Valve - Open Circuit
If you encounter any of these diagnostic codes on your Hyundai vehicle, it is recommended to have a qualified mechanic or Hyundai dealership diagnose and address the specific issue. Using professional diagnostic equipment ensures accurate readings and appropriate repairs. Keep in mind that the list of codes can change over time as new models and diagnostic systems are introduced.
