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P2181 P2025 P017B Fans run at high speed All the time
Posted to the Waveform Library on 6/11/2020

This Photo is of a bad thermostat that set faults P218100: Cooling System Performance, P202500: EVAP Fuel Vapor Temperature Sensor and P017B00: Cylinder Head Temperature Sensor Circuit Range/Performance. When you inspect the Thermostat at room temperature...