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2003 Ford Focus 02 sensor on lean

Tiny
RANDY SHARP
  • MEMBER
  • 2003 FORD FOCUS
  • 2.3L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 75,000 MILES
I have posted this problem before it has had this trouble code for a couple of years it does not effect it unless you turn on the ac or the defrosters then it cuts out, but I take that back sometimes it does cut out even though you do not have the ac or defrosters on, it don't stall it just cuts out. But now I am ready to fix it I put new plugs in it a while back and I am going to check fuel pressure. Does anyone know of any other things I could check.
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Saturday, February 7th, 2015 AT 10:34 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
The most common cause of a lean condition is a engine vacuum leak. Check for that first and let me know what you find. Also, if you have the trouble code, that may help me. And yes, low fuel pressure could cause it too.
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Saturday, February 7th, 2015 AT 12:06 PM
Tiny
RANDY SHARP
  • MEMBER
  • 161 POSTS
The trouble code is 2274 02 Sensor Signal Stuck Lean-Bank 1 Sensor 3
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Sunday, February 8th, 2015 AT 11:28 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,192 POSTS
Have you replaced the sensor?
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Wednesday, February 11th, 2015 AT 8:38 AM

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