Question

How do I fix the engine codes P0031 and P1031 on my 2003 Infiniti G35?

Answer 1

HI there

Code p1031 is for the heater circuit on the bank one front O2 sensor. In most cases replacing the sensor will solve the issue without a problem. The heater element inside the sensor tends to burn up over time so the sensor will need to be replaced.

Answer 2

P0031 2003 INFINITI G35 Code - Air Fuel Ratio Sensor 1 Heater Bank 1 Control Circuit Low
Read more: https://www.autocodes.com/p0031_2003_infiniti_g35.html

P1031 INFINITI Code - Air Fuel Ratio Sensor 1 Heater Control Circuit Low Bank 1
Read more: https://www.autocodes.com/p1031_infiniti.html