2004 Nissan Titan P1278/P1279

Tiny
RICKMCVEIGH
  • MEMBER
  • 2004 NISSAN TITAN
  • 5.6L
  • V8
  • AUTOMATIC
  • 122,000 MILES
"service engine soon" light came on. Auto zone checked and came up with p1278-p1279 pm their computer. Have checked this out online but cannot get a real solution answer.
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Friday, May 8th, 2015 AT 8:26 AM

3 Replies

Tiny
WRENCHTECH
  • EXPERT
You'll never get "real solutions" from a code number. They are merely information for a starting point and the actual cause has to be determined by a tech.

Those are both slow response to 2 different 0/2 sensors. That usually means they are clogged if that is the only code.
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Friday, May 8th, 2015 AT 9:37 AM
Tiny
RICKMCVEIGH
  • MEMBER
Thanks for the rapid response. Could you tell me where these 2 0/2 sensors are, and how do I get to them.

Again thanks much

rick
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Friday, May 8th, 2015 AT 2:14 PM
Tiny
WRENCHTECH
  • EXPERT
They are the 2 upstream sensors for both sides which will be the ones before the Converters.
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Friday, May 8th, 2015 AT 3:07 PM

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