The Toyota fault code P059 means that the heated oxygen sensor (HO2S), bank 2, sensor 1 heater resistance is not in spec. It seems You have a faulty oxygen sensor or there is a problem with its wiring. Some symptoms that You might be experiencing are higher than normal fuel consumption and excessive smoke coming from Your exhaust. The oxygen sensor in Your vehicle measures oxygen levels in the exhaust gases exiting the engine. The oxygen sensor should be replaced every 60,000 to 90,000 miles. This sensor is a worn item and does fail over time.
Scott C
July 30, 2020
The Toyota fault code 59 is a Trans Fluid Temperature sensor circuit error due to high voltage.
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