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Toyota
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2016
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Highlander XLE, FWD
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Repair and Diagnosis
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Engine Performance
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Testing & Diagnosis
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SFI System [2GR-FE] - Diagnostic Codes - (Except Hybrid) (3 Of 5)
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SFI System
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DTC P0128: Thermostat [12/2013 - 08/2014]
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Typical Malfunction Thresholds
Typical Malfunction Thresholds
Duration that both of the following conditions are met
5 seconds or more
Estimated engine coolant temperature
75°C (167°F) or higher
Engine coolant temperature sensor output
Less than 75°C (167°F)