Home » Toyota Prius » Toyota Prius Maintenance » Prius Prime P148F-00 was unrelated to Engine Coolant Pump

The P148F-00 error code was related to the Exhaust Heat Exchanger…

To start the fix, you’ll need a Gates 18777 Premium Molded Heater Hose, they are $9 on Amazon.

Prius Prime P148F-00

From here, get under your car and locate the catalytic converter. Once you remove the two hoses, install the Gates 18777 to create the bypass, and that’s it!

This is meant to be a bandaid until we get the car to the dealership to replace the heat exchanger under warranty!


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