Subaru 2001 p0031 code

Question

Hiii my car show code p0031 oxygen sensor heater (bank 1 sensor 1 ) pls can you tell me where is the location of oxygen sensor thnx

Answer 1

HI there

This sensor is the first O2 sensor in the exhaust system BEFORE the catalytic converter. This model only has 2 O2 sensors on it, so bank 1 sensor 1 is the first in line.