Common Hyundai Fault Codes

Most common OBD-II codes reported for Hyundai vehicles

P0087

Fuel Rail Pressure Too Low

critical
→P0300

Random/Multiple Cylinder Misfire Detected

critical
→P0171

System Too Lean (Bank 1)

moderate
→P0420

Catalyst System Efficiency Below Threshold (Bank 1)

moderate
→P0128

Coolant Temperature Below Thermostat Regulating Temperature

minor
→P0335

Crankshaft Position Sensor A Circuit Malfunction

critical
→P0011

Camshaft Position Timing Over-Advanced (Bank 1)

moderate
→P0507

AI diagnosis available

→B0001

Airbag Deployment Circuit Malfunction

critical
→U0121

AI diagnosis available

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