Question

I have a Chevrolet Optra with engine code P0141, what is the code meaning?

Answer 1

Hi there,

This code is referring to the rear heated O2 sensor. This is the one AFTER the catalytic converter. Usually the sensor is the cause of this code. Basically it's returning to much voltage back to the ecm which means there is to much current draw. This causes the ecm to turn on the check engine light.

Answer 2

P0141 CHEVROLET Code - O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 2
Read more: https://www.autocodes.com/p0141_chevrolet.html