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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Car throws code P0155 after both o2 sensors was changed multiple times
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<blockquote data-quote="basspro302" data-source="post: 15610454" data-attributes="member: 171674"><p>It helps when you give a description of the code. Looks like a heater code for the o2 sensor. You either have a fuse issue wiring issue open/short or unlikely but possible a pcm issue. I would have to look it up and find a diagram but i belive yhe heaters are puls width modulated so basically the pcm will turn the heaters on and off so many times in a second to achive the correct temp. Your best bet would be to have a tech properly diag the issue. </p><p></p><p>Does the code return immediately after the new 02 sensor?</p></blockquote><p></p>
[QUOTE="basspro302, post: 15610454, member: 171674"] It helps when you give a description of the code. Looks like a heater code for the o2 sensor. You either have a fuse issue wiring issue open/short or unlikely but possible a pcm issue. I would have to look it up and find a diagram but i belive yhe heaters are puls width modulated so basically the pcm will turn the heaters on and off so many times in a second to achive the correct temp. Your best bet would be to have a tech properly diag the issue. Does the code return immediately after the new 02 sensor? [/QUOTE]
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Mustang Forums
2011-2014 Mustangs
Engine/Tuning
Car throws code P0155 after both o2 sensors was changed multiple times
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