DTC Detection Logic
| DTC | CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition | |
| P0128 | THERMOSTAT FNCTN [Coolant thermostat (coolant temperature below thermostat regulating temperature)] |
Diagnosis condition | - |
| Signal (terminal) | Engine coolant temperature sensor signal | ||
| Threshold | The engine coolant temperature does not reach to specified temperature even though the engine has run long enough. | ||
| Diagnosis delay time | - | ||