2003 Hyundai Tiburon Logo
Posted on Jun 07, 2009
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2003 hyundai tiburon check engine light

The check engine light on my 2003 hyundai Tiburon is on. Had it checked. The code was PO154.I know it has to do with the o2 sensor, but how can I find out more

  • Anonymous Mar 18, 2014

    check engine lite code 128

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  • Master 1,077 Answers
  • Posted on Jun 07, 2009
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You're right, the PO154 has to do with the O2 sensor. The code has the info of Oxygen Sensor Circuit No Activity Detected (Bank 2 Sensor 1).
Bank 2 is the exhaust manifold that cylinder #2 uses.
Sensor 1 is the sensor in BETWEEN the exhaust manifold and the catalytic converter.
No Activity Detected in the circuit could mean the O2 sensor is dead, or an open/cut wire going to the sensor.
That's about all the info you can get out of that code PO154.

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