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Registered
2013 Oxford White Focus ST3
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469 Posts
Discussion Starter #1
The air to fuel ratio on my access port reads 44.10. Super lean. Figure it's probably one of the 02 sensors. Would it be the upstream or downstream sensor. Also got these codes some pretty sure it's probably the sensor before the cat. Even though the down pipe doesn't have a cat.
385278
385279
385280
385281
 

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Moderator
2017 Kona Blue ST1
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1,422 Posts
Wirte out all the current DTC'S.

You have more going on there than a bad wide band O2.
 

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Registered
2013 Oxford White Focus ST3
Joined
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469 Posts
Discussion Starter #3
Changed bank 1, up stream O2 sensor, fixed the issue

No 🐈
 
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