P2251 Code Open - BANK 1 - Mazda 5 2008

[igknighted]

Hello Everyone:

I have been ignoring check engine light for sometime now and I need to have this fixed sooner now as it will come up more frequently. I got the following code when checking via ODB2 reader.

Code:
P2251 (Open - BANK 1)
Code:

When i went in to search for oxygen sensor, I got confused at different terminology being used such as "FRONT" "REAR", "Before Catalyst", "After Catalyst", "Upstream", "Downstream".

Would this code be FRONT, BEFORE CATAYST and UPSTREAM ???? Can some one help me find a matching part from a retailer in Canada or US willing to ship to Canada.

Thank you

 

[Vasy]

FRONT, BEFORE CATAYST and UPSTREAM, all same.
REAR, After Catalyst, Downstream, all same

P2251 generally caused by a bad connection between the Upstream O2 Sensor. check connection, if looks ok, replace the sensor.