2002 Nissan Altima 4 cyl with OBD code P0031

Question

Have an OBDII code P0031 for Nissan Altima sedan 2.5 4 cylinder engine

Answer 1

The P0031 code is for the HO2S11 Heater Control Circuit Low. More than likelly you have to replaced the "Front O2 Sensor" to repair the problem. The Front O2 Sensor is on the intake manifold.

P0031 NISSAN - HO2S11 Heater Control Circuit Low

Read more: https://www.autocodes.com/p0031_nissan.html