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P0155 - 2002 Toyota Sequoia

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Heated oxygen sensor (HO2S) 1 , bank 2, heater control -
circuit malfunction

sensor 1 is threaded into the exhaust manifold, passenger side of engine.

  1. Disconnect the oxygen sensor connector.
  2. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance: 11 - 16 ohms at 20°C (68°F)
  3. If the resistance is not as specified, replace the sensor. Tighten to 14 ft. lbs. (20 Nm).
  4. Reconnect the oxygen sensor connector.

Posted on Oct 04, 2010

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Posted on Jan 02, 2017

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