jkjk15

Hey guys,

I have a 2005 ES330. Recently, the check engine light, VCS, and Slip lights all came on. I did a scan which showed P0051 Code.

It appears that I need to replace the Bank 1 Sensor 2 (Front O2 sensor).

I am in the process of buying this sensor from Rock Auto, but I am confused as to which sensor is the right one.

There are 5 different O2 sensors that Denso carries for the ES330 as follows:

1. DENSO Part # 2344064 More Information About this Part OE Style
DENSO is the O.E. Manufacturer; Downstream Rear (Downstream)

2. DENSO Part # 2344261 More Information About this Part OE Style
DENSO is the O.E. Manufacturer; Downstream Front (Upstream)

3. DENSO Part # 2349042 More Information About this Part OE Style
DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor; Upstream Front (Upstream)

4. DENSO Part # 2349057 More Information About this Part OE Style
DENSO is the O.E. Manufacturer / Air Fuel Ratio Sensor; Upstream Rear (Downstream)

5. DENSO Part # 2349045 More Information About this Part
Front (Upstream) Right

My guess is #3, can someone confirm this??

Thanks.

KevinES300

3 or 5 and DENSO is a good brand