Code PO1034 Sensor Circuit no activity detected

2005 FORD TAURUS
130,000 MILES
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TAMISHIV
  • MEMBER
  • 2 POSTS
Sensor Circuit no activity detected, Could you tell me what this exactly means and what I need to do to fix this problem? We changed spark plugs and wires, replaced the oxygen sensor. Please Help!!
May 22, 2012 at 11:31 AM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
That would be a PO134. It means the 0/2 sensor is not generating voltage as it should when it sees a rich mixture. This could mean there is too lean a mixture, a problem with the wiring, PCM or sensor.
May 22, 2012 at 12:42 PM
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