2006 Volvo S40 2.4i UPSTREAM B1S1 o2 sensor how to replacement. engine trouble code p0031 b1s1.

2006 Volvo s40 2.4i Bank 1 sensor 1 replacement how to. Volvo engine trouble code p0031. B1S1 replacement. you will need a Deep-well/ atleast 3inch deep o2 sensor socket is 7/8 or 22mm in a 3/8 drive. for b1s1 part on 2006 Volvo s40 2.4i the part number is # 234-9150 on AMAZON for the UPSTREAM o2 sensor. also, remember to check the Fuse F33 under the engine hood before repair to ensure the fuse is not burnt out and The repair is not needed. as well if the o2 sensor not working after the repair ENSURE you Push the o2 sensor wire connector ALL THE WAY SEATED until you hear or feel a ( CLICK ) if it is not seated fully you will not get any B1S1 reading on o2 sensor with Vehicle scanner tool.