P0135 engine code

Question

I have a 2003 Chevy impala was told my engine light code was. What’s wrong

Answer 1

Hi there,

This code means there is a problem with the heater circuit on the bank 1 O2 sensor, sensor #1. This is usually a problem with the O2 sensor and once you replace it and clear the codes it will resolve the issue. Here is some more info on the code.

P0135 CHEVROLET - HO2S Heater Performance Bank 1 Sensor 1

Read more: https://www.autocodes.com/p0135_chevrolet.html