Why is my 2004 Toyota Corolla consuming fuel rapidly, and what do I do to conserve fuel?

Question

Why is my Toyota consuming fuel rapidly instead of conserving it and what do I do to conserve fuel? Fuel consumption is high. I got the engine codes P0037, P0128, and P0500

Answer 1

There are many things that could cause high fuel consumption. The P0037 and P0128 codes are for a bad oxygen sensor and a bad thermostat, and those components will cause higher than usual fuel consumption.

P0037 TOYOTA Code - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2
Read more: https://www.autocodes.com/p0037_toyota.html

P0128 TOYOTA Code - Coolant Thermostat
Read more: https://www.autocodes.com/p0128_toyota.html

P0500 TOYOTA Code - Vehicle Speed Sensor 'A'
Read more: https://www.autocodes.com/p0500_toyota.html