P0053 code definition HO2S Heater Resistance (Bank 1 Sensor 1)

[dja4260]

05 Suburban threw this code today.

A quick google search indicates it could be a slew of things including the "upstream o2 sensor." It's a $30 part. Am I wrong for simply swapping this item out or am I missing a step?

02 sensor

 

[wpod]

Is the wiring O.K.?

 

[Trav]

05 Suburban threw this code today.

A quick google search indicates it could be a slew of things including the "upstream o2 sensor." It's a $30 part. Am I wrong for simply swapping this item out or am I missing a step?

02 sensor

Check the O2-A fuse in the under hood fuse box, if that is okay go ahead a swap the sensor. $30 doesnt buy a whole lot of diagnostic time so I have no problem throwning an inexpensive part at it when it the likely culprit.

 

[Jetronic]

and most often it's in fact the heater circuit that fails first in oxygen sensors

 

[tiger862]

Didn't say mileage but 02 sensor replacement is normally between 60k and 90k but I don't know anyone that does this. On my Saturn Vue every 50k light would intermittent come on for sensor requiring replacement.