Code 172 and 173??

[94' Five.0]

My equus reader came in over the weekend and I finally got around to pulling codes. The CEL has been coming on randomly but I haven't noticed any major difference in how the car is running. Here's what I got...

172 - Heated oxygen sensor indicates lean condition, right side
173 - Heated oxygen sensor indicates rich condition, right side

My first guess is just a bad sensor since it's showing both lean and rich? Anything else I should check out before simply assuming it's the sensor?

Thanks

 

[HISSIN50]

There are issues with the MAF signal that can create a rich issue at idle and lean issue at WOT but since it's only spitting the code for one side..............

I would swap the sensors (left to right, right to left), reset the KAM and drive it. If the code goes to the left side, it's a good bet the sensor is bad. If not, you just possibly saved some money...............

 

[final5-0]

What JT said

He is always right on the money with helpful info

Grady

 

[Zero_chance]

Just make sure to take your time and use the right tools so you dont strip them out in the process.