Code 172 and 173??

94' Five.0 · Nov 4, 2007

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 · Nov 5, 2007

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 · Nov 5, 2007

What JT said

He is always right on the money with helpful info

Grady

Zero_chance · Nov 5, 2007

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

Code 172 and 173??

94' Five.0

HISSIN50

"How long does it take to get help in here?

final5-0

Mustang Master

Zero_chance

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Code 172 and 173??

94' Five.0

HISSIN50

"How long does it take to get help in here?

final5-0

Mustang Master

Zero_chance

Similar threads

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