My 07 Prius is giving an error code of p3193. Autozone's definition is "Fuel Run Out" Probable Cause: Check Other Codes First and Out of Fuel. There are no other codes. The car seems to be operating fine. What is going on? I'm assuming, given the Autozone definition, that this is a p0193 Fuel Rail Pressure Sensor Circuit High Input. I don't know what that means practically. My best guess is the circuit is failing. The car has 135k on it. So what is going on? What should I do? Is the car safe to operate reliably?
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