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1997 Chevy Cavalier Code PO134

Tiny
SCOTTSBAYGIRL
  • MEMBER
  • 1997 CHEVROLET CAVALIER
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 225,000 MILES
Code PO134 appears, comes back even after changing O2 Sensor
Saturday, February 6th, 2010 AT 4:38 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

You will need to check the circuit back to the ECU, I feel that this is a wiring fault.

Mark, mhpautos
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Saturday, February 6th, 2010 AT 4:43 PM
Tiny
SCOTTSBAYGIRL
  • MEMBER
  • 2 POSTS
It's fine untill engine reaches operating temperature then the PO134 code comes back again
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Saturday, February 6th, 2010 AT 4:50 PM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

P0134 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

I would still be checking the continuity back to the ECU as you say the sensor has been replaced, otherwise you may be looking at an ECU internal fault.

Mark, mhpautos
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Saturday, February 6th, 2010 AT 8:20 PM

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