Question

I have the engine code P0140 on my 2000 Dodge, what is the meaning of the code?

Answer 1

Hi there,

Most of the time the heater circuit inside the sensor is the cause of the code. Once the sensor is replaced it will usually solve the problem. Without any vehicle information I can't tell you which side of the engine it's on or anything, but most of the time the sensor is the cause of the code.

Answer 2

P0140 DODGE - O2 Sensor 1/2 Circuit Low
Read more: https://www.autocodes.com/p0140_dodge.html