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P2237 code how t0 solv

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Code p2237 refers to heated oxygen sensor(HOS2) 1 bank 1-positivecurrent control-open circuit ---or oxygen sensor(O2S)1 bank 1-open circuit--- or heated oxygen sensor1 bank 1 -no signal=== causes for all three is wiring--HOS2----wiring O2S---wiring--HO2S---ecm. Basically I would be looking for a disconnected wire or broken wire to the sensors.

Posted on Jul 23, 2013

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Posted on Jan 02, 2017

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  • The codes both point to an Oxygen Sensor failure. Bank 1 Sensor1.
  • This is the first sensor right off the back of the manifold. Replace it and clear the code.
  • To replace it just remove the connector and twist it out with a deep socket or wrench. Revers to install.

  • If you have any comments please feel free to ask.
  • Hope this helps and thank you for using FixYa.

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Code p2237on 2004 elantra


CODE P2237 HO2S 11 PUMPING CURRENT CONTROL CIRCUIT OPEN BANK 1 SENSOR 1 POSSIBLE CAUSES. POOR CONNECTION OR DAMAGED HARNESS, OPEN IN HO2S CONTROL CIRCUIT, FAULTY HO2S,THE ECM HAS FAILED.

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