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P0053 p0059

Old 07-27-2018, 12:18 PM
  #1  
Daviddrivesbetterthanyou
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Default P0053 p0059

I have both p0053 and p0059 (o2 heater resistance codes) on my 2010 gt. I replaced both upstream o2 sensors and still have the codes. At first the codes would come and go, and now they're just always on. Also while this was happening my ac clutch would kick it on and off when I turned the ac on (blow cold air when it wants to) and now it just doesn't blow cold at all unless I jump the ac clutch relay. I had also recharged the ac and it still doesn't turn on when its suppose to. Can these 2 be related?? Any ideas on how to get rid of the o2 codes? I took my car to get painted for a week and when I got it back I drove it for an hour and the ac worked fine and my codes went away. Then 2 days later codes are back and ac isn't working again. Help pleasee
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Old 03-15-2019, 06:26 PM
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Phoenixs1234
 
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Did you find a solution to your problem with the p0053 and p0059 codes and Ac problem?
I have a 2010 Mustang Gt and I am having the exact same problem you have.
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Old 03-15-2019, 10:23 PM
  #3  
imp
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Originally Posted by Phoenixs1234 View Post
Did you find a solution to your problem with the p0053 and p0059 codes and Ac problem?
I have a 2010 Mustang Gt and I am having the exact same problem you have.
These codes are often used by Ford to alert it's Technicians to Cat Converter trouble. Especially found on high-mileage cars. I fought with heater-resistance codes a long time, replaced O2 sensors, even installed completely new wiring to them, until I learned the downstream sensors, used to monitor Cat function, are used as I describe.

Check the O2 sensor heater resistance first, using an Ohmmeter. Should be on the order of 10 Ohms, infinite Ohms to ground, of course. Best done with the sensor disconnected. The wire colors will tell you which two are the heater connection. If they're OK, you likely have Cat problems.
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