DTC Detection Logic
| DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause | |
|---|---|---|---|---|
| P0181 | Fuel tank temperature sensor circuit range/performance | A) | Rationally incorrect voltage from the sensor is sent to ECM, compared with the voltage signals from engine coolant temperature sensor and intake air temperature sensor. |
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| B) | The comparison result of signals transmitted to ECM from each temperature sensor (IAT sensor, ECT sensor, and FTT sensor) shows that the voltage signal of the FTT sensor is higher/lower than that of other temperature sensors when the engine is started with its cold state. |
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